Commit | Line | Data |
---|---|---|
e9e23e23 | 1 | /* Utility and Unix shadow routines for GNU Emacs on the Microsoft W32 API. |
0b5538bd | 2 | Copyright (C) 1994, 1995, 2000, 2001, 2002, 2003, 2004, |
4e6835db | 3 | 2005, 2006, 2007 Free Software Foundation, Inc. |
95ed0025 | 4 | |
3b7ad313 EN |
5 | This file is part of GNU Emacs. |
6 | ||
7 | GNU Emacs is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
684d6f5b | 9 | the Free Software Foundation; either version 3, or (at your option) |
3b7ad313 EN |
10 | any later version. |
11 | ||
12 | GNU Emacs is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU Emacs; see the file COPYING. If not, write to | |
4fc5845f LK |
19 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
20 | Boston, MA 02110-1301, USA. | |
95ed0025 RS |
21 | |
22 | Geoff Voelker (voelker@cs.washington.edu) 7-29-94 | |
23 | */ | |
76b3903d | 24 | #include <stddef.h> /* for offsetof */ |
95ed0025 RS |
25 | #include <stdlib.h> |
26 | #include <stdio.h> | |
27 | #include <io.h> | |
480b0c5b | 28 | #include <errno.h> |
95ed0025 RS |
29 | #include <fcntl.h> |
30 | #include <ctype.h> | |
480b0c5b | 31 | #include <signal.h> |
b3308d2e | 32 | #include <sys/file.h> |
480b0c5b | 33 | #include <sys/time.h> |
16bb7578 | 34 | #include <sys/utime.h> |
22189f79 | 35 | #include <mbstring.h> /* for _mbspbrk */ |
480b0c5b GV |
36 | |
37 | /* must include CRT headers *before* config.h */ | |
4838e624 PJ |
38 | |
39 | #ifdef HAVE_CONFIG_H | |
40 | #include <config.h> | |
41 | #endif | |
42 | ||
480b0c5b GV |
43 | #undef access |
44 | #undef chdir | |
45 | #undef chmod | |
46 | #undef creat | |
47 | #undef ctime | |
48 | #undef fopen | |
49 | #undef link | |
50 | #undef mkdir | |
51 | #undef mktemp | |
52 | #undef open | |
53 | #undef rename | |
54 | #undef rmdir | |
55 | #undef unlink | |
56 | ||
57 | #undef close | |
58 | #undef dup | |
59 | #undef dup2 | |
60 | #undef pipe | |
61 | #undef read | |
62 | #undef write | |
95ed0025 | 63 | |
d8fcc1b9 AI |
64 | #undef strerror |
65 | ||
95ed0025 | 66 | #include "lisp.h" |
95ed0025 RS |
67 | |
68 | #include <pwd.h> | |
3d19b645 | 69 | #include <grp.h> |
95ed0025 | 70 | |
971bce75 AI |
71 | #ifdef __GNUC__ |
72 | #define _ANONYMOUS_UNION | |
73 | #define _ANONYMOUS_STRUCT | |
74 | #endif | |
480b0c5b | 75 | #include <windows.h> |
2d5324c5 | 76 | #include <shlobj.h> |
00b3b7b3 | 77 | |
480b0c5b GV |
78 | #ifdef HAVE_SOCKETS /* TCP connection support, if kernel can do it */ |
79 | #include <sys/socket.h> | |
80 | #undef socket | |
81 | #undef bind | |
82 | #undef connect | |
83 | #undef htons | |
84 | #undef ntohs | |
85 | #undef inet_addr | |
86 | #undef gethostname | |
87 | #undef gethostbyname | |
88 | #undef getservbyname | |
ecd270eb | 89 | #undef getpeername |
380961a6 | 90 | #undef shutdown |
962955c5 JR |
91 | #undef setsockopt |
92 | #undef listen | |
93 | #undef getsockname | |
94 | #undef accept | |
95 | #undef recvfrom | |
96 | #undef sendto | |
480b0c5b | 97 | #endif |
00b3b7b3 | 98 | |
489f9371 | 99 | #include "w32.h" |
480b0c5b | 100 | #include "ndir.h" |
489f9371 | 101 | #include "w32heap.h" |
253574a6 JR |
102 | #include "systime.h" |
103 | ||
2d5324c5 JR |
104 | typedef HRESULT (WINAPI * ShGetFolderPath_fn) |
105 | (IN HWND, IN int, IN HANDLE, IN DWORD, OUT char *); | |
106 | ||
9785d95b BK |
107 | void globals_of_w32 (); |
108 | ||
76b3903d GV |
109 | extern Lisp_Object Vw32_downcase_file_names; |
110 | extern Lisp_Object Vw32_generate_fake_inodes; | |
111 | extern Lisp_Object Vw32_get_true_file_attributes; | |
e0c181dd | 112 | extern int w32_num_mouse_buttons; |
76b3903d | 113 | |
18e070ac | 114 | \f |
9785d95b | 115 | /* |
aa5ee2a3 | 116 | Initialization states |
9785d95b BK |
117 | */ |
118 | static BOOL g_b_init_is_windows_9x; | |
119 | static BOOL g_b_init_open_process_token; | |
120 | static BOOL g_b_init_get_token_information; | |
121 | static BOOL g_b_init_lookup_account_sid; | |
122 | static BOOL g_b_init_get_sid_identifier_authority; | |
123 | ||
f60ae425 BK |
124 | /* |
125 | BEGIN: Wrapper functions around OpenProcessToken | |
126 | and other functions in advapi32.dll that are only | |
127 | supported in Windows NT / 2k / XP | |
128 | */ | |
129 | /* ** Function pointer typedefs ** */ | |
130 | typedef BOOL (WINAPI * OpenProcessToken_Proc) ( | |
131 | HANDLE ProcessHandle, | |
132 | DWORD DesiredAccess, | |
133 | PHANDLE TokenHandle); | |
134 | typedef BOOL (WINAPI * GetTokenInformation_Proc) ( | |
135 | HANDLE TokenHandle, | |
136 | TOKEN_INFORMATION_CLASS TokenInformationClass, | |
137 | LPVOID TokenInformation, | |
138 | DWORD TokenInformationLength, | |
139 | PDWORD ReturnLength); | |
74258518 JR |
140 | typedef BOOL (WINAPI * GetProcessTimes_Proc) ( |
141 | HANDLE process_handle, | |
142 | LPFILETIME creation_time, | |
143 | LPFILETIME exit_time, | |
144 | LPFILETIME kernel_time, | |
145 | LPFILETIME user_time); | |
146 | ||
147 | GetProcessTimes_Proc get_process_times_fn = NULL; | |
148 | ||
f60ae425 BK |
149 | #ifdef _UNICODE |
150 | const char * const LookupAccountSid_Name = "LookupAccountSidW"; | |
151 | #else | |
152 | const char * const LookupAccountSid_Name = "LookupAccountSidA"; | |
153 | #endif | |
154 | typedef BOOL (WINAPI * LookupAccountSid_Proc) ( | |
155 | LPCTSTR lpSystemName, | |
156 | PSID Sid, | |
157 | LPTSTR Name, | |
158 | LPDWORD cbName, | |
159 | LPTSTR DomainName, | |
160 | LPDWORD cbDomainName, | |
161 | PSID_NAME_USE peUse); | |
162 | typedef PSID_IDENTIFIER_AUTHORITY (WINAPI * GetSidIdentifierAuthority_Proc) ( | |
163 | PSID pSid); | |
164 | ||
165 | /* ** A utility function ** */ | |
9bfb11f9 KS |
166 | static BOOL |
167 | is_windows_9x () | |
f60ae425 | 168 | { |
9785d95b | 169 | static BOOL s_b_ret=0; |
f60ae425 | 170 | OSVERSIONINFO os_ver; |
9785d95b | 171 | if (g_b_init_is_windows_9x == 0) |
f60ae425 | 172 | { |
9785d95b BK |
173 | g_b_init_is_windows_9x = 1; |
174 | ZeroMemory(&os_ver, sizeof(OSVERSIONINFO)); | |
175 | os_ver.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); | |
176 | if (GetVersionEx (&os_ver)) | |
177 | { | |
178 | s_b_ret = (os_ver.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS); | |
179 | } | |
f60ae425 | 180 | } |
9785d95b | 181 | return s_b_ret; |
f60ae425 BK |
182 | } |
183 | ||
74258518 JR |
184 | /* Get total user and system times for get-internal-run-time. |
185 | Returns a list of three integers if the times are provided by the OS | |
186 | (NT derivatives), otherwise it returns the result of current-time. */ | |
187 | Lisp_Object | |
188 | w32_get_internal_run_time () | |
189 | { | |
190 | if (get_process_times_fn) | |
191 | { | |
192 | FILETIME create, exit, kernel, user; | |
193 | HANDLE proc = GetCurrentProcess(); | |
194 | if ((*get_process_times_fn) (proc, &create, &exit, &kernel, &user)) | |
195 | { | |
196 | LARGE_INTEGER user_int, kernel_int, total; | |
197 | int microseconds; | |
198 | user_int.LowPart = user.dwLowDateTime; | |
199 | user_int.HighPart = user.dwHighDateTime; | |
200 | kernel_int.LowPart = kernel.dwLowDateTime; | |
201 | kernel_int.HighPart = kernel.dwHighDateTime; | |
202 | total.QuadPart = user_int.QuadPart + kernel_int.QuadPart; | |
203 | /* FILETIME is 100 nanosecond increments, Emacs only wants | |
204 | microsecond resolution. */ | |
205 | total.QuadPart /= 10; | |
206 | microseconds = total.QuadPart % 1000000; | |
207 | total.QuadPart /= 1000000; | |
208 | ||
209 | /* Sanity check to make sure we can represent the result. */ | |
210 | if (total.HighPart == 0) | |
211 | { | |
212 | int secs = total.LowPart; | |
213 | ||
214 | return list3 (make_number ((secs >> 16) & 0xffff), | |
215 | make_number (secs & 0xffff), | |
216 | make_number (microseconds)); | |
217 | } | |
218 | } | |
219 | } | |
220 | ||
221 | return Fcurrent_time (); | |
222 | } | |
223 | ||
f60ae425 BK |
224 | /* ** The wrapper functions ** */ |
225 | ||
226 | BOOL WINAPI open_process_token ( | |
227 | HANDLE ProcessHandle, | |
228 | DWORD DesiredAccess, | |
229 | PHANDLE TokenHandle) | |
230 | { | |
9785d95b | 231 | static OpenProcessToken_Proc s_pfn_Open_Process_Token = NULL; |
f60ae425 BK |
232 | HMODULE hm_advapi32 = NULL; |
233 | if (is_windows_9x () == TRUE) | |
234 | { | |
235 | return FALSE; | |
236 | } | |
9785d95b BK |
237 | if (g_b_init_open_process_token == 0) |
238 | { | |
239 | g_b_init_open_process_token = 1; | |
240 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
241 | s_pfn_Open_Process_Token = | |
242 | (OpenProcessToken_Proc) GetProcAddress (hm_advapi32, "OpenProcessToken"); | |
243 | } | |
244 | if (s_pfn_Open_Process_Token == NULL) | |
f60ae425 BK |
245 | { |
246 | return FALSE; | |
247 | } | |
248 | return ( | |
9785d95b | 249 | s_pfn_Open_Process_Token ( |
f60ae425 BK |
250 | ProcessHandle, |
251 | DesiredAccess, | |
252 | TokenHandle) | |
253 | ); | |
254 | } | |
255 | ||
256 | BOOL WINAPI get_token_information ( | |
257 | HANDLE TokenHandle, | |
258 | TOKEN_INFORMATION_CLASS TokenInformationClass, | |
259 | LPVOID TokenInformation, | |
260 | DWORD TokenInformationLength, | |
261 | PDWORD ReturnLength) | |
262 | { | |
9785d95b | 263 | static GetTokenInformation_Proc s_pfn_Get_Token_Information = NULL; |
f60ae425 BK |
264 | HMODULE hm_advapi32 = NULL; |
265 | if (is_windows_9x () == TRUE) | |
266 | { | |
267 | return FALSE; | |
268 | } | |
9785d95b BK |
269 | if (g_b_init_get_token_information == 0) |
270 | { | |
271 | g_b_init_get_token_information = 1; | |
272 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
273 | s_pfn_Get_Token_Information = | |
274 | (GetTokenInformation_Proc) GetProcAddress (hm_advapi32, "GetTokenInformation"); | |
275 | } | |
276 | if (s_pfn_Get_Token_Information == NULL) | |
f60ae425 BK |
277 | { |
278 | return FALSE; | |
279 | } | |
280 | return ( | |
9785d95b | 281 | s_pfn_Get_Token_Information ( |
f60ae425 BK |
282 | TokenHandle, |
283 | TokenInformationClass, | |
284 | TokenInformation, | |
285 | TokenInformationLength, | |
286 | ReturnLength) | |
287 | ); | |
288 | } | |
289 | ||
290 | BOOL WINAPI lookup_account_sid ( | |
291 | LPCTSTR lpSystemName, | |
292 | PSID Sid, | |
293 | LPTSTR Name, | |
294 | LPDWORD cbName, | |
295 | LPTSTR DomainName, | |
296 | LPDWORD cbDomainName, | |
297 | PSID_NAME_USE peUse) | |
298 | { | |
9785d95b | 299 | static LookupAccountSid_Proc s_pfn_Lookup_Account_Sid = NULL; |
f60ae425 BK |
300 | HMODULE hm_advapi32 = NULL; |
301 | if (is_windows_9x () == TRUE) | |
302 | { | |
303 | return FALSE; | |
304 | } | |
9785d95b BK |
305 | if (g_b_init_lookup_account_sid == 0) |
306 | { | |
307 | g_b_init_lookup_account_sid = 1; | |
308 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
309 | s_pfn_Lookup_Account_Sid = | |
310 | (LookupAccountSid_Proc) GetProcAddress (hm_advapi32, LookupAccountSid_Name); | |
311 | } | |
312 | if (s_pfn_Lookup_Account_Sid == NULL) | |
f60ae425 BK |
313 | { |
314 | return FALSE; | |
315 | } | |
316 | return ( | |
9785d95b | 317 | s_pfn_Lookup_Account_Sid ( |
f60ae425 BK |
318 | lpSystemName, |
319 | Sid, | |
320 | Name, | |
321 | cbName, | |
322 | DomainName, | |
323 | cbDomainName, | |
324 | peUse) | |
325 | ); | |
326 | } | |
327 | ||
328 | PSID_IDENTIFIER_AUTHORITY WINAPI get_sid_identifier_authority ( | |
329 | PSID pSid) | |
330 | { | |
9785d95b | 331 | static GetSidIdentifierAuthority_Proc s_pfn_Get_Sid_Identifier_Authority = NULL; |
f60ae425 BK |
332 | HMODULE hm_advapi32 = NULL; |
333 | if (is_windows_9x () == TRUE) | |
334 | { | |
335 | return NULL; | |
336 | } | |
9785d95b BK |
337 | if (g_b_init_get_sid_identifier_authority == 0) |
338 | { | |
339 | g_b_init_get_sid_identifier_authority = 1; | |
340 | hm_advapi32 = LoadLibrary ("Advapi32.dll"); | |
341 | s_pfn_Get_Sid_Identifier_Authority = | |
342 | (GetSidIdentifierAuthority_Proc) GetProcAddress ( | |
343 | hm_advapi32, "GetSidIdentifierAuthority"); | |
344 | } | |
345 | if (s_pfn_Get_Sid_Identifier_Authority == NULL) | |
f60ae425 BK |
346 | { |
347 | return NULL; | |
348 | } | |
9785d95b | 349 | return (s_pfn_Get_Sid_Identifier_Authority (pSid)); |
f60ae425 BK |
350 | } |
351 | ||
352 | /* | |
353 | END: Wrapper functions around OpenProcessToken | |
354 | and other functions in advapi32.dll that are only | |
355 | supported in Windows NT / 2k / XP | |
356 | */ | |
357 | ||
358 | \f | |
18e070ac AI |
359 | /* Equivalent of strerror for W32 error codes. */ |
360 | char * | |
361 | w32_strerror (int error_no) | |
362 | { | |
363 | static char buf[500]; | |
364 | ||
365 | if (error_no == 0) | |
366 | error_no = GetLastError (); | |
367 | ||
368 | buf[0] = '\0'; | |
369 | if (!FormatMessage (FORMAT_MESSAGE_FROM_SYSTEM, NULL, | |
370 | error_no, | |
371 | 0, /* choose most suitable language */ | |
372 | buf, sizeof (buf), NULL)) | |
373 | sprintf (buf, "w32 error %u", error_no); | |
374 | return buf; | |
375 | } | |
376 | ||
ed91b2ad EZ |
377 | /* Return 1 if P is a valid pointer to an object of size SIZE. Return |
378 | 0 if P is NOT a valid pointer. Return -1 if we cannot validate P. | |
379 | ||
380 | This is called from alloc.c:valid_pointer_p. */ | |
381 | int | |
382 | w32_valid_pointer_p (void *p, int size) | |
383 | { | |
384 | SIZE_T done; | |
385 | HANDLE h = OpenProcess (PROCESS_VM_READ, FALSE, GetCurrentProcessId ()); | |
386 | ||
387 | if (h) | |
388 | { | |
389 | unsigned char *buf = alloca (size); | |
390 | int retval = ReadProcessMemory (h, p, buf, size, &done); | |
391 | ||
392 | CloseHandle (h); | |
393 | return retval; | |
394 | } | |
395 | else | |
396 | return -1; | |
397 | } | |
398 | ||
76b3903d | 399 | static char startup_dir[MAXPATHLEN]; |
00b3b7b3 | 400 | |
95ed0025 | 401 | /* Get the current working directory. */ |
480b0c5b | 402 | char * |
95ed0025 RS |
403 | getwd (char *dir) |
404 | { | |
76b3903d | 405 | #if 0 |
480b0c5b GV |
406 | if (GetCurrentDirectory (MAXPATHLEN, dir) > 0) |
407 | return dir; | |
408 | return NULL; | |
76b3903d GV |
409 | #else |
410 | /* Emacs doesn't actually change directory itself, and we want to | |
411 | force our real wd to be where emacs.exe is to avoid unnecessary | |
412 | conflicts when trying to rename or delete directories. */ | |
413 | strcpy (dir, startup_dir); | |
414 | return dir; | |
415 | #endif | |
95ed0025 RS |
416 | } |
417 | ||
480b0c5b | 418 | #ifndef HAVE_SOCKETS |
95ed0025 RS |
419 | /* Emulate gethostname. */ |
420 | int | |
421 | gethostname (char *buffer, int size) | |
422 | { | |
177c0ea7 | 423 | /* NT only allows small host names, so the buffer is |
95ed0025 RS |
424 | certainly large enough. */ |
425 | return !GetComputerName (buffer, &size); | |
426 | } | |
480b0c5b | 427 | #endif /* HAVE_SOCKETS */ |
95ed0025 RS |
428 | |
429 | /* Emulate getloadavg. */ | |
430 | int | |
431 | getloadavg (double loadavg[], int nelem) | |
432 | { | |
433 | int i; | |
434 | ||
435 | /* A faithful emulation is going to have to be saved for a rainy day. */ | |
177c0ea7 | 436 | for (i = 0; i < nelem; i++) |
95ed0025 RS |
437 | { |
438 | loadavg[i] = 0.0; | |
439 | } | |
440 | return i; | |
441 | } | |
442 | ||
480b0c5b | 443 | /* Emulate getpwuid, getpwnam and others. */ |
95ed0025 | 444 | |
051fe60d GV |
445 | #define PASSWD_FIELD_SIZE 256 |
446 | ||
447 | static char the_passwd_name[PASSWD_FIELD_SIZE]; | |
448 | static char the_passwd_passwd[PASSWD_FIELD_SIZE]; | |
449 | static char the_passwd_gecos[PASSWD_FIELD_SIZE]; | |
450 | static char the_passwd_dir[PASSWD_FIELD_SIZE]; | |
451 | static char the_passwd_shell[PASSWD_FIELD_SIZE]; | |
95ed0025 | 452 | |
177c0ea7 | 453 | static struct passwd the_passwd = |
95ed0025 RS |
454 | { |
455 | the_passwd_name, | |
456 | the_passwd_passwd, | |
457 | 0, | |
458 | 0, | |
459 | 0, | |
460 | the_passwd_gecos, | |
461 | the_passwd_dir, | |
462 | the_passwd_shell, | |
463 | }; | |
464 | ||
3d19b645 LH |
465 | static struct group the_group = |
466 | { | |
467 | /* There are no groups on NT, so we just return "root" as the | |
468 | group name. */ | |
469 | "root", | |
470 | }; | |
471 | ||
177c0ea7 JB |
472 | int |
473 | getuid () | |
474 | { | |
480b0c5b GV |
475 | return the_passwd.pw_uid; |
476 | } | |
477 | ||
177c0ea7 JB |
478 | int |
479 | geteuid () | |
480 | { | |
480b0c5b GV |
481 | /* I could imagine arguing for checking to see whether the user is |
482 | in the Administrators group and returning a UID of 0 for that | |
483 | case, but I don't know how wise that would be in the long run. */ | |
177c0ea7 | 484 | return getuid (); |
480b0c5b GV |
485 | } |
486 | ||
177c0ea7 JB |
487 | int |
488 | getgid () | |
489 | { | |
480b0c5b GV |
490 | return the_passwd.pw_gid; |
491 | } | |
492 | ||
177c0ea7 JB |
493 | int |
494 | getegid () | |
495 | { | |
480b0c5b GV |
496 | return getgid (); |
497 | } | |
498 | ||
95ed0025 RS |
499 | struct passwd * |
500 | getpwuid (int uid) | |
501 | { | |
480b0c5b GV |
502 | if (uid == the_passwd.pw_uid) |
503 | return &the_passwd; | |
504 | return NULL; | |
95ed0025 RS |
505 | } |
506 | ||
3d19b645 LH |
507 | struct group * |
508 | getgrgid (gid_t gid) | |
509 | { | |
510 | return &the_group; | |
511 | } | |
512 | ||
95ed0025 RS |
513 | struct passwd * |
514 | getpwnam (char *name) | |
515 | { | |
516 | struct passwd *pw; | |
177c0ea7 | 517 | |
95ed0025 RS |
518 | pw = getpwuid (getuid ()); |
519 | if (!pw) | |
520 | return pw; | |
521 | ||
480b0c5b | 522 | if (stricmp (name, pw->pw_name)) |
95ed0025 RS |
523 | return NULL; |
524 | ||
525 | return pw; | |
526 | } | |
527 | ||
480b0c5b GV |
528 | void |
529 | init_user_info () | |
95ed0025 | 530 | { |
480b0c5b GV |
531 | /* Find the user's real name by opening the process token and |
532 | looking up the name associated with the user-sid in that token. | |
533 | ||
534 | Use the relative portion of the identifier authority value from | |
535 | the user-sid as the user id value (same for group id using the | |
536 | primary group sid from the process token). */ | |
537 | ||
10aabbf9 JB |
538 | char user_sid[256], name[256], domain[256]; |
539 | DWORD length = sizeof (name), dlength = sizeof (domain), trash; | |
540 | HANDLE token = NULL; | |
541 | SID_NAME_USE user_type; | |
542 | ||
543 | if (open_process_token (GetCurrentProcess (), TOKEN_QUERY, &token) | |
544 | && get_token_information (token, TokenUser, | |
545 | (PVOID) user_sid, sizeof (user_sid), &trash) | |
546 | && lookup_account_sid (NULL, *((PSID *) user_sid), name, &length, | |
547 | domain, &dlength, &user_type)) | |
d1c1c3d2 | 548 | { |
480b0c5b GV |
549 | strcpy (the_passwd.pw_name, name); |
550 | /* Determine a reasonable uid value. */ | |
551 | if (stricmp ("administrator", name) == 0) | |
552 | { | |
553 | the_passwd.pw_uid = 0; | |
554 | the_passwd.pw_gid = 0; | |
555 | } | |
556 | else | |
557 | { | |
558 | SID_IDENTIFIER_AUTHORITY * pSIA; | |
559 | ||
f60ae425 | 560 | pSIA = get_sid_identifier_authority (*((PSID *) user_sid)); |
480b0c5b GV |
561 | /* I believe the relative portion is the last 4 bytes (of 6) |
562 | with msb first. */ | |
563 | the_passwd.pw_uid = ((pSIA->Value[2] << 24) + | |
564 | (pSIA->Value[3] << 16) + | |
565 | (pSIA->Value[4] << 8) + | |
566 | (pSIA->Value[5] << 0)); | |
567 | /* restrict to conventional uid range for normal users */ | |
568 | the_passwd.pw_uid = the_passwd.pw_uid % 60001; | |
569 | ||
570 | /* Get group id */ | |
f60ae425 | 571 | if (get_token_information (token, TokenPrimaryGroup, |
10aabbf9 | 572 | (PVOID) user_sid, sizeof (user_sid), &trash)) |
480b0c5b GV |
573 | { |
574 | SID_IDENTIFIER_AUTHORITY * pSIA; | |
575 | ||
f60ae425 | 576 | pSIA = get_sid_identifier_authority (*((PSID *) user_sid)); |
480b0c5b GV |
577 | the_passwd.pw_gid = ((pSIA->Value[2] << 24) + |
578 | (pSIA->Value[3] << 16) + | |
579 | (pSIA->Value[4] << 8) + | |
580 | (pSIA->Value[5] << 0)); | |
581 | /* I don't know if this is necessary, but for safety... */ | |
582 | the_passwd.pw_gid = the_passwd.pw_gid % 60001; | |
583 | } | |
584 | else | |
585 | the_passwd.pw_gid = the_passwd.pw_uid; | |
586 | } | |
587 | } | |
588 | /* If security calls are not supported (presumably because we | |
10aabbf9 | 589 | are running under Windows 95), fallback to this. */ |
480b0c5b GV |
590 | else if (GetUserName (name, &length)) |
591 | { | |
592 | strcpy (the_passwd.pw_name, name); | |
593 | if (stricmp ("administrator", name) == 0) | |
594 | the_passwd.pw_uid = 0; | |
595 | else | |
596 | the_passwd.pw_uid = 123; | |
597 | the_passwd.pw_gid = the_passwd.pw_uid; | |
598 | } | |
599 | else | |
600 | { | |
601 | strcpy (the_passwd.pw_name, "unknown"); | |
602 | the_passwd.pw_uid = 123; | |
603 | the_passwd.pw_gid = 123; | |
d1c1c3d2 | 604 | } |
95ed0025 | 605 | |
480b0c5b GV |
606 | /* Ensure HOME and SHELL are defined. */ |
607 | if (getenv ("HOME") == NULL) | |
ca149beb | 608 | abort (); |
480b0c5b | 609 | if (getenv ("SHELL") == NULL) |
ca149beb | 610 | abort (); |
95ed0025 | 611 | |
480b0c5b GV |
612 | /* Set dir and shell from environment variables. */ |
613 | strcpy (the_passwd.pw_dir, getenv ("HOME")); | |
614 | strcpy (the_passwd.pw_shell, getenv ("SHELL")); | |
bd4a449f | 615 | |
480b0c5b GV |
616 | if (token) |
617 | CloseHandle (token); | |
95ed0025 RS |
618 | } |
619 | ||
95ed0025 | 620 | int |
480b0c5b | 621 | random () |
95ed0025 | 622 | { |
480b0c5b GV |
623 | /* rand () on NT gives us 15 random bits...hack together 30 bits. */ |
624 | return ((rand () << 15) | rand ()); | |
95ed0025 RS |
625 | } |
626 | ||
95ed0025 | 627 | void |
480b0c5b | 628 | srandom (int seed) |
95ed0025 | 629 | { |
480b0c5b | 630 | srand (seed); |
95ed0025 RS |
631 | } |
632 | ||
76b3903d | 633 | |
cbe39279 RS |
634 | /* Normalize filename by converting all path separators to |
635 | the specified separator. Also conditionally convert upper | |
636 | case path name components to lower case. */ | |
637 | ||
638 | static void | |
639 | normalize_filename (fp, path_sep) | |
640 | register char *fp; | |
641 | char path_sep; | |
642 | { | |
643 | char sep; | |
644 | char *elem; | |
645 | ||
5162ffce MB |
646 | /* Always lower-case drive letters a-z, even if the filesystem |
647 | preserves case in filenames. | |
648 | This is so filenames can be compared by string comparison | |
649 | functions that are case-sensitive. Even case-preserving filesystems | |
650 | do not distinguish case in drive letters. */ | |
651 | if (fp[1] == ':' && *fp >= 'A' && *fp <= 'Z') | |
652 | { | |
653 | *fp += 'a' - 'A'; | |
654 | fp += 2; | |
655 | } | |
656 | ||
fbd6baed | 657 | if (NILP (Vw32_downcase_file_names)) |
cbe39279 RS |
658 | { |
659 | while (*fp) | |
660 | { | |
661 | if (*fp == '/' || *fp == '\\') | |
662 | *fp = path_sep; | |
663 | fp++; | |
664 | } | |
665 | return; | |
666 | } | |
667 | ||
668 | sep = path_sep; /* convert to this path separator */ | |
669 | elem = fp; /* start of current path element */ | |
670 | ||
671 | do { | |
672 | if (*fp >= 'a' && *fp <= 'z') | |
673 | elem = 0; /* don't convert this element */ | |
674 | ||
675 | if (*fp == 0 || *fp == ':') | |
676 | { | |
677 | sep = *fp; /* restore current separator (or 0) */ | |
678 | *fp = '/'; /* after conversion of this element */ | |
679 | } | |
680 | ||
681 | if (*fp == '/' || *fp == '\\') | |
682 | { | |
683 | if (elem && elem != fp) | |
684 | { | |
685 | *fp = 0; /* temporary end of string */ | |
686 | _strlwr (elem); /* while we convert to lower case */ | |
687 | } | |
688 | *fp = sep; /* convert (or restore) path separator */ | |
689 | elem = fp + 1; /* next element starts after separator */ | |
690 | sep = path_sep; | |
691 | } | |
692 | } while (*fp++); | |
693 | } | |
694 | ||
480b0c5b | 695 | /* Destructively turn backslashes into slashes. */ |
95ed0025 | 696 | void |
480b0c5b GV |
697 | dostounix_filename (p) |
698 | register char *p; | |
95ed0025 | 699 | { |
cbe39279 | 700 | normalize_filename (p, '/'); |
95ed0025 RS |
701 | } |
702 | ||
480b0c5b | 703 | /* Destructively turn slashes into backslashes. */ |
95ed0025 | 704 | void |
480b0c5b GV |
705 | unixtodos_filename (p) |
706 | register char *p; | |
95ed0025 | 707 | { |
cbe39279 | 708 | normalize_filename (p, '\\'); |
95ed0025 RS |
709 | } |
710 | ||
480b0c5b GV |
711 | /* Remove all CR's that are followed by a LF. |
712 | (From msdos.c...probably should figure out a way to share it, | |
713 | although this code isn't going to ever change.) */ | |
35f0d482 | 714 | int |
480b0c5b GV |
715 | crlf_to_lf (n, buf) |
716 | register int n; | |
717 | register unsigned char *buf; | |
35f0d482 | 718 | { |
480b0c5b GV |
719 | unsigned char *np = buf; |
720 | unsigned char *startp = buf; | |
721 | unsigned char *endp = buf + n; | |
35f0d482 | 722 | |
480b0c5b GV |
723 | if (n == 0) |
724 | return n; | |
725 | while (buf < endp - 1) | |
95ed0025 | 726 | { |
480b0c5b GV |
727 | if (*buf == 0x0d) |
728 | { | |
729 | if (*(++buf) != 0x0a) | |
730 | *np++ = 0x0d; | |
731 | } | |
732 | else | |
733 | *np++ = *buf++; | |
95ed0025 | 734 | } |
480b0c5b GV |
735 | if (buf < endp) |
736 | *np++ = *buf++; | |
737 | return np - startp; | |
95ed0025 RS |
738 | } |
739 | ||
76b3903d GV |
740 | /* Parse the root part of file name, if present. Return length and |
741 | optionally store pointer to char after root. */ | |
742 | static int | |
743 | parse_root (char * name, char ** pPath) | |
744 | { | |
745 | char * start = name; | |
746 | ||
747 | if (name == NULL) | |
748 | return 0; | |
749 | ||
750 | /* find the root name of the volume if given */ | |
751 | if (isalpha (name[0]) && name[1] == ':') | |
752 | { | |
753 | /* skip past drive specifier */ | |
754 | name += 2; | |
755 | if (IS_DIRECTORY_SEP (name[0])) | |
756 | name++; | |
757 | } | |
758 | else if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) | |
759 | { | |
760 | int slashes = 2; | |
761 | name += 2; | |
762 | do | |
763 | { | |
764 | if (IS_DIRECTORY_SEP (*name) && --slashes == 0) | |
765 | break; | |
766 | name++; | |
767 | } | |
768 | while ( *name ); | |
769 | if (IS_DIRECTORY_SEP (name[0])) | |
770 | name++; | |
771 | } | |
772 | ||
773 | if (pPath) | |
774 | *pPath = name; | |
775 | ||
776 | return name - start; | |
777 | } | |
778 | ||
779 | /* Get long base name for name; name is assumed to be absolute. */ | |
780 | static int | |
781 | get_long_basename (char * name, char * buf, int size) | |
782 | { | |
783 | WIN32_FIND_DATA find_data; | |
784 | HANDLE dir_handle; | |
785 | int len = 0; | |
786 | ||
9ab8560d | 787 | /* must be valid filename, no wild cards or other invalid characters */ |
22189f79 | 788 | if (_mbspbrk (name, "*?|<>\"")) |
bb1584c8 RS |
789 | return 0; |
790 | ||
76b3903d GV |
791 | dir_handle = FindFirstFile (name, &find_data); |
792 | if (dir_handle != INVALID_HANDLE_VALUE) | |
793 | { | |
794 | if ((len = strlen (find_data.cFileName)) < size) | |
795 | memcpy (buf, find_data.cFileName, len + 1); | |
796 | else | |
797 | len = 0; | |
798 | FindClose (dir_handle); | |
799 | } | |
800 | return len; | |
801 | } | |
802 | ||
803 | /* Get long name for file, if possible (assumed to be absolute). */ | |
804 | BOOL | |
805 | w32_get_long_filename (char * name, char * buf, int size) | |
806 | { | |
807 | char * o = buf; | |
808 | char * p; | |
809 | char * q; | |
810 | char full[ MAX_PATH ]; | |
811 | int len; | |
812 | ||
813 | len = strlen (name); | |
814 | if (len >= MAX_PATH) | |
815 | return FALSE; | |
816 | ||
817 | /* Use local copy for destructive modification. */ | |
818 | memcpy (full, name, len+1); | |
819 | unixtodos_filename (full); | |
820 | ||
821 | /* Copy root part verbatim. */ | |
822 | len = parse_root (full, &p); | |
823 | memcpy (o, full, len); | |
824 | o += len; | |
4f8ac0b2 | 825 | *o = '\0'; |
76b3903d GV |
826 | size -= len; |
827 | ||
4f8ac0b2 | 828 | while (p != NULL && *p) |
76b3903d GV |
829 | { |
830 | q = p; | |
831 | p = strchr (q, '\\'); | |
832 | if (p) *p = '\0'; | |
833 | len = get_long_basename (full, o, size); | |
834 | if (len > 0) | |
835 | { | |
836 | o += len; | |
837 | size -= len; | |
838 | if (p != NULL) | |
839 | { | |
840 | *p++ = '\\'; | |
841 | if (size < 2) | |
842 | return FALSE; | |
843 | *o++ = '\\'; | |
844 | size--; | |
845 | *o = '\0'; | |
846 | } | |
847 | } | |
848 | else | |
849 | return FALSE; | |
850 | } | |
76b3903d GV |
851 | |
852 | return TRUE; | |
853 | } | |
854 | ||
9d3355d1 GV |
855 | int |
856 | is_unc_volume (const char *filename) | |
857 | { | |
858 | const char *ptr = filename; | |
859 | ||
860 | if (!IS_DIRECTORY_SEP (ptr[0]) || !IS_DIRECTORY_SEP (ptr[1]) || !ptr[2]) | |
861 | return 0; | |
862 | ||
22189f79 | 863 | if (_mbspbrk (ptr + 2, "*?|<>\"\\/")) |
9d3355d1 GV |
864 | return 0; |
865 | ||
866 | return 1; | |
867 | } | |
76b3903d | 868 | |
95ed0025 RS |
869 | /* Routines that are no-ops on NT but are defined to get Emacs to compile. */ |
870 | ||
177c0ea7 JB |
871 | int |
872 | sigsetmask (int signal_mask) | |
873 | { | |
95ed0025 RS |
874 | return 0; |
875 | } | |
876 | ||
177c0ea7 JB |
877 | int |
878 | sigmask (int sig) | |
879 | { | |
8f900f6e AI |
880 | return 0; |
881 | } | |
882 | ||
177c0ea7 JB |
883 | int |
884 | sigblock (int sig) | |
885 | { | |
95ed0025 RS |
886 | return 0; |
887 | } | |
888 | ||
177c0ea7 JB |
889 | int |
890 | sigunblock (int sig) | |
891 | { | |
8f900f6e AI |
892 | return 0; |
893 | } | |
894 | ||
177c0ea7 JB |
895 | int |
896 | setpgrp (int pid, int gid) | |
897 | { | |
95ed0025 RS |
898 | return 0; |
899 | } | |
900 | ||
177c0ea7 JB |
901 | int |
902 | alarm (int seconds) | |
903 | { | |
95ed0025 RS |
904 | return 0; |
905 | } | |
906 | ||
480b0c5b | 907 | #define REG_ROOT "SOFTWARE\\GNU\\Emacs" |
f332b293 | 908 | |
177c0ea7 | 909 | LPBYTE |
fbd6baed | 910 | w32_get_resource (key, lpdwtype) |
f332b293 GV |
911 | char *key; |
912 | LPDWORD lpdwtype; | |
913 | { | |
914 | LPBYTE lpvalue; | |
915 | HKEY hrootkey = NULL; | |
916 | DWORD cbData; | |
917 | BOOL ok = FALSE; | |
177c0ea7 JB |
918 | |
919 | /* Check both the current user and the local machine to see if | |
f332b293 | 920 | we have any resources. */ |
177c0ea7 | 921 | |
f332b293 GV |
922 | if (RegOpenKeyEx (HKEY_CURRENT_USER, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) |
923 | { | |
924 | lpvalue = NULL; | |
925 | ||
177c0ea7 JB |
926 | if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS |
927 | && (lpvalue = (LPBYTE) xmalloc (cbData)) != NULL | |
f332b293 GV |
928 | && RegQueryValueEx (hrootkey, key, NULL, lpdwtype, lpvalue, &cbData) == ERROR_SUCCESS) |
929 | { | |
930 | return (lpvalue); | |
931 | } | |
932 | ||
933 | if (lpvalue) xfree (lpvalue); | |
177c0ea7 | 934 | |
f332b293 | 935 | RegCloseKey (hrootkey); |
177c0ea7 JB |
936 | } |
937 | ||
f332b293 GV |
938 | if (RegOpenKeyEx (HKEY_LOCAL_MACHINE, REG_ROOT, 0, KEY_READ, &hrootkey) == ERROR_SUCCESS) |
939 | { | |
940 | lpvalue = NULL; | |
177c0ea7 | 941 | |
76b3903d GV |
942 | if (RegQueryValueEx (hrootkey, key, NULL, NULL, NULL, &cbData) == ERROR_SUCCESS |
943 | && (lpvalue = (LPBYTE) xmalloc (cbData)) != NULL | |
944 | && RegQueryValueEx (hrootkey, key, NULL, lpdwtype, lpvalue, &cbData) == ERROR_SUCCESS) | |
f332b293 GV |
945 | { |
946 | return (lpvalue); | |
947 | } | |
177c0ea7 | 948 | |
f332b293 | 949 | if (lpvalue) xfree (lpvalue); |
177c0ea7 | 950 | |
f332b293 | 951 | RegCloseKey (hrootkey); |
177c0ea7 JB |
952 | } |
953 | ||
f332b293 GV |
954 | return (NULL); |
955 | } | |
956 | ||
75b08edb GV |
957 | char *get_emacs_configuration (void); |
958 | extern Lisp_Object Vsystem_configuration; | |
959 | ||
f332b293 | 960 | void |
aa7b87b0 | 961 | init_environment (char ** argv) |
f332b293 | 962 | { |
b3308d2e KH |
963 | static const char * const tempdirs[] = { |
964 | "$TMPDIR", "$TEMP", "$TMP", "c:/" | |
965 | }; | |
2d5324c5 | 966 | |
b3308d2e | 967 | int i; |
2d5324c5 | 968 | |
b3308d2e KH |
969 | const int imax = sizeof (tempdirs) / sizeof (tempdirs[0]); |
970 | ||
971 | /* Make sure they have a usable $TMPDIR. Many Emacs functions use | |
972 | temporary files and assume "/tmp" if $TMPDIR is unset, which | |
973 | will break on DOS/Windows. Refuse to work if we cannot find | |
974 | a directory, not even "c:/", usable for that purpose. */ | |
975 | for (i = 0; i < imax ; i++) | |
976 | { | |
977 | const char *tmp = tempdirs[i]; | |
978 | ||
979 | if (*tmp == '$') | |
980 | tmp = getenv (tmp + 1); | |
981 | /* Note that `access' can lie to us if the directory resides on a | |
982 | read-only filesystem, like CD-ROM or a write-protected floppy. | |
983 | The only way to be really sure is to actually create a file and | |
984 | see if it succeeds. But I think that's too much to ask. */ | |
a302c7ae | 985 | if (tmp && _access (tmp, D_OK) == 0) |
b3308d2e KH |
986 | { |
987 | char * var = alloca (strlen (tmp) + 8); | |
988 | sprintf (var, "TMPDIR=%s", tmp); | |
aca583b2 | 989 | _putenv (strdup (var)); |
b3308d2e KH |
990 | break; |
991 | } | |
992 | } | |
993 | if (i >= imax) | |
994 | cmd_error_internal | |
995 | (Fcons (Qerror, | |
996 | Fcons (build_string ("no usable temporary directories found!!"), | |
997 | Qnil)), | |
998 | "While setting TMPDIR: "); | |
999 | ||
ca149beb AI |
1000 | /* Check for environment variables and use registry settings if they |
1001 | don't exist. Fallback on default values where applicable. */ | |
f332b293 | 1002 | { |
480b0c5b GV |
1003 | int i; |
1004 | LPBYTE lpval; | |
1005 | DWORD dwType; | |
69fb0241 | 1006 | char locale_name[32]; |
2d5324c5 JR |
1007 | struct stat ignored; |
1008 | char default_home[MAX_PATH]; | |
f332b293 | 1009 | |
e00b99c8 | 1010 | static const struct env_entry |
ca149beb AI |
1011 | { |
1012 | char * name; | |
1013 | char * def_value; | |
e00b99c8 | 1014 | } dflt_envvars[] = |
ca149beb AI |
1015 | { |
1016 | {"HOME", "C:/"}, | |
1017 | {"PRELOAD_WINSOCK", NULL}, | |
1018 | {"emacs_dir", "C:/emacs"}, | |
cc14250a | 1019 | {"EMACSLOADPATH", "%emacs_dir%/site-lisp;%emacs_dir%/../site-lisp;%emacs_dir%/lisp;%emacs_dir%/leim"}, |
ca149beb AI |
1020 | {"SHELL", "%emacs_dir%/bin/cmdproxy.exe"}, |
1021 | {"EMACSDATA", "%emacs_dir%/etc"}, | |
1022 | {"EMACSPATH", "%emacs_dir%/bin"}, | |
76b3903d | 1023 | /* We no longer set INFOPATH because Info-default-directory-list |
ca149beb AI |
1024 | is then ignored. */ |
1025 | /* {"INFOPATH", "%emacs_dir%/info"}, */ | |
1026 | {"EMACSDOC", "%emacs_dir%/etc"}, | |
69fb0241 JR |
1027 | {"TERM", "cmd"}, |
1028 | {"LANG", NULL}, | |
480b0c5b GV |
1029 | }; |
1030 | ||
e00b99c8 EZ |
1031 | #define N_ENV_VARS sizeof(dflt_envvars)/sizeof(dflt_envvars[0]) |
1032 | ||
1033 | /* We need to copy dflt_envvars[] and work on the copy because we | |
1034 | don't want the dumped Emacs to inherit the values of | |
1035 | environment variables we saw during dumping (which could be on | |
1036 | a different system). The defaults above must be left intact. */ | |
1037 | struct env_entry env_vars[N_ENV_VARS]; | |
1038 | ||
1039 | for (i = 0; i < N_ENV_VARS; i++) | |
1040 | env_vars[i] = dflt_envvars[i]; | |
1041 | ||
2d5324c5 JR |
1042 | /* For backwards compatibility, check if a .emacs file exists in C:/ |
1043 | If not, then we can try to default to the appdata directory under the | |
1044 | user's profile, which is more likely to be writable. */ | |
1045 | if (stat ("C:/.emacs", &ignored) < 0) | |
1046 | { | |
1047 | HRESULT profile_result; | |
1048 | /* Dynamically load ShGetFolderPath, as it won't exist on versions | |
1049 | of Windows 95 and NT4 that have not been updated to include | |
1050 | MSIE 5. Also we don't link with shell32.dll by default. */ | |
1051 | HMODULE shell32_dll; | |
1052 | ShGetFolderPath_fn get_folder_path; | |
1053 | shell32_dll = GetModuleHandle ("shell32.dll"); | |
1054 | get_folder_path = (ShGetFolderPath_fn) | |
1055 | GetProcAddress (shell32_dll, "SHGetFolderPathA"); | |
1056 | ||
1057 | if (get_folder_path != NULL) | |
1058 | { | |
1059 | profile_result = get_folder_path (NULL, CSIDL_APPDATA, NULL, | |
1060 | 0, default_home); | |
1061 | ||
1062 | /* If we can't get the appdata dir, revert to old behaviour. */ | |
1063 | if (profile_result == S_OK) | |
1064 | env_vars[0].def_value = default_home; | |
1065 | } | |
1066 | ||
1067 | /* Unload shell32.dll, it is not needed anymore. */ | |
1068 | FreeLibrary (shell32_dll); | |
1069 | } | |
1070 | ||
69fb0241 JR |
1071 | /* Get default locale info and use it for LANG. */ |
1072 | if (GetLocaleInfo (LOCALE_USER_DEFAULT, | |
1073 | LOCALE_SABBREVLANGNAME | LOCALE_USE_CP_ACP, | |
1074 | locale_name, sizeof (locale_name))) | |
1075 | { | |
e00b99c8 | 1076 | for (i = 0; i < N_ENV_VARS; i++) |
69fb0241 JR |
1077 | { |
1078 | if (strcmp (env_vars[i].name, "LANG") == 0) | |
1079 | { | |
1080 | env_vars[i].def_value = locale_name; | |
1081 | break; | |
1082 | } | |
1083 | } | |
1084 | } | |
1085 | ||
ca149beb AI |
1086 | #define SET_ENV_BUF_SIZE (4 * MAX_PATH) /* to cover EMACSLOADPATH */ |
1087 | ||
1088 | /* Treat emacs_dir specially: set it unconditionally based on our | |
1089 | location, if it appears that we are running from the bin subdir | |
1090 | of a standard installation. */ | |
1091 | { | |
1092 | char *p; | |
1093 | char modname[MAX_PATH]; | |
1094 | ||
1095 | if (!GetModuleFileName (NULL, modname, MAX_PATH)) | |
1096 | abort (); | |
1097 | if ((p = strrchr (modname, '\\')) == NULL) | |
1098 | abort (); | |
1099 | *p = 0; | |
1100 | ||
1101 | if ((p = strrchr (modname, '\\')) && stricmp (p, "\\bin") == 0) | |
1102 | { | |
1103 | char buf[SET_ENV_BUF_SIZE]; | |
1104 | ||
1105 | *p = 0; | |
1106 | for (p = modname; *p; p++) | |
1107 | if (*p == '\\') *p = '/'; | |
177c0ea7 | 1108 | |
ca149beb | 1109 | _snprintf (buf, sizeof(buf)-1, "emacs_dir=%s", modname); |
a302c7ae | 1110 | _putenv (strdup (buf)); |
ca149beb | 1111 | } |
950090be JR |
1112 | /* Handle running emacs from the build directory: src/oo-spd/i386/ */ |
1113 | ||
1114 | /* FIXME: should use substring of get_emacs_configuration (). | |
1115 | But I don't think the Windows build supports alpha, mips etc | |
1116 | anymore, so have taken the easy option for now. */ | |
1117 | else if (p && stricmp (p, "\\i386") == 0) | |
1118 | { | |
1119 | *p = 0; | |
1120 | p = strrchr (modname, '\\'); | |
1121 | if (p != NULL) | |
1122 | { | |
1123 | *p = 0; | |
1124 | p = strrchr (modname, '\\'); | |
1125 | if (p && stricmp (p, "\\src") == 0) | |
1126 | { | |
1127 | char buf[SET_ENV_BUF_SIZE]; | |
1128 | ||
1129 | *p = 0; | |
1130 | for (p = modname; *p; p++) | |
1131 | if (*p == '\\') *p = '/'; | |
1132 | ||
1133 | _snprintf (buf, sizeof(buf)-1, "emacs_dir=%s", modname); | |
1134 | _putenv (strdup (buf)); | |
1135 | } | |
1136 | } | |
1137 | } | |
ca149beb AI |
1138 | } |
1139 | ||
e00b99c8 | 1140 | for (i = 0; i < N_ENV_VARS; i++) |
f332b293 | 1141 | { |
ca149beb | 1142 | if (!getenv (env_vars[i].name)) |
480b0c5b | 1143 | { |
ca149beb | 1144 | int dont_free = 0; |
480b0c5b | 1145 | |
aa5ee2a3 JB |
1146 | if ((lpval = w32_get_resource (env_vars[i].name, &dwType)) == NULL |
1147 | /* Also ignore empty environment variables. */ | |
1148 | || *lpval == 0) | |
ca149beb AI |
1149 | { |
1150 | lpval = env_vars[i].def_value; | |
1151 | dwType = REG_EXPAND_SZ; | |
1152 | dont_free = 1; | |
480b0c5b | 1153 | } |
ca149beb AI |
1154 | |
1155 | if (lpval) | |
480b0c5b | 1156 | { |
892eb237 | 1157 | char buf1[SET_ENV_BUF_SIZE], buf2[SET_ENV_BUF_SIZE]; |
ca149beb | 1158 | |
892eb237 EZ |
1159 | if (dwType == REG_EXPAND_SZ) |
1160 | ExpandEnvironmentStrings ((LPSTR) lpval, buf1, sizeof(buf1)); | |
ca149beb | 1161 | else if (dwType == REG_SZ) |
892eb237 EZ |
1162 | strcpy (buf1, lpval); |
1163 | if (dwType == REG_EXPAND_SZ || dwType == REG_SZ) | |
ca149beb | 1164 | { |
892eb237 EZ |
1165 | _snprintf (buf2, sizeof(buf2)-1, "%s=%s", env_vars[i].name, |
1166 | buf1); | |
1167 | _putenv (strdup (buf2)); | |
ca149beb | 1168 | } |
f332b293 | 1169 | |
ca149beb AI |
1170 | if (!dont_free) |
1171 | xfree (lpval); | |
1172 | } | |
480b0c5b GV |
1173 | } |
1174 | } | |
1175 | } | |
1176 | ||
75b08edb GV |
1177 | /* Rebuild system configuration to reflect invoking system. */ |
1178 | Vsystem_configuration = build_string (EMACS_CONFIGURATION); | |
1179 | ||
76b3903d GV |
1180 | /* Another special case: on NT, the PATH variable is actually named |
1181 | "Path" although cmd.exe (perhaps NT itself) arranges for | |
1182 | environment variable lookup and setting to be case insensitive. | |
1183 | However, Emacs assumes a fully case sensitive environment, so we | |
1184 | need to change "Path" to "PATH" to match the expectations of | |
1185 | various elisp packages. We do this by the sneaky method of | |
1186 | modifying the string in the C runtime environ entry. | |
1187 | ||
1188 | The same applies to COMSPEC. */ | |
1189 | { | |
1190 | char ** envp; | |
1191 | ||
1192 | for (envp = environ; *envp; envp++) | |
1193 | if (_strnicmp (*envp, "PATH=", 5) == 0) | |
1194 | memcpy (*envp, "PATH=", 5); | |
1195 | else if (_strnicmp (*envp, "COMSPEC=", 8) == 0) | |
1196 | memcpy (*envp, "COMSPEC=", 8); | |
1197 | } | |
1198 | ||
1199 | /* Remember the initial working directory for getwd, then make the | |
1200 | real wd be the location of emacs.exe to avoid conflicts when | |
1201 | renaming or deleting directories. (We also don't call chdir when | |
1202 | running subprocesses for the same reason.) */ | |
1203 | if (!GetCurrentDirectory (MAXPATHLEN, startup_dir)) | |
1204 | abort (); | |
1205 | ||
1206 | { | |
1207 | char *p; | |
aa7b87b0 | 1208 | static char modname[MAX_PATH]; |
76b3903d GV |
1209 | |
1210 | if (!GetModuleFileName (NULL, modname, MAX_PATH)) | |
1211 | abort (); | |
1212 | if ((p = strrchr (modname, '\\')) == NULL) | |
1213 | abort (); | |
1214 | *p = 0; | |
1215 | ||
1216 | SetCurrentDirectory (modname); | |
aa7b87b0 AI |
1217 | |
1218 | /* Ensure argv[0] has the full path to Emacs. */ | |
1219 | *p = '\\'; | |
1220 | argv[0] = modname; | |
76b3903d GV |
1221 | } |
1222 | ||
20af4831 JR |
1223 | /* Determine if there is a middle mouse button, to allow parse_button |
1224 | to decide whether right mouse events should be mouse-2 or | |
1225 | mouse-3. */ | |
e0c181dd | 1226 | w32_num_mouse_buttons = GetSystemMetrics (SM_CMOUSEBUTTONS); |
20af4831 | 1227 | |
480b0c5b GV |
1228 | init_user_info (); |
1229 | } | |
1230 | ||
bf794306 EZ |
1231 | char * |
1232 | emacs_root_dir (void) | |
1233 | { | |
1234 | static char root_dir[FILENAME_MAX]; | |
1235 | const char *p; | |
1236 | ||
1237 | p = getenv ("emacs_dir"); | |
1238 | if (p == NULL) | |
1239 | abort (); | |
1240 | strcpy (root_dir, p); | |
1241 | root_dir[parse_root (root_dir, NULL)] = '\0'; | |
1242 | dostounix_filename (root_dir); | |
1243 | return root_dir; | |
1244 | } | |
1245 | ||
480b0c5b GV |
1246 | /* We don't have scripts to automatically determine the system configuration |
1247 | for Emacs before it's compiled, and we don't want to have to make the | |
1248 | user enter it, so we define EMACS_CONFIGURATION to invoke this runtime | |
1249 | routine. */ | |
1250 | ||
480b0c5b GV |
1251 | char * |
1252 | get_emacs_configuration (void) | |
1253 | { | |
1254 | char *arch, *oem, *os; | |
c5247da2 | 1255 | int build_num; |
a302c7ae | 1256 | static char configuration_buffer[32]; |
480b0c5b GV |
1257 | |
1258 | /* Determine the processor type. */ | |
177c0ea7 | 1259 | switch (get_processor_type ()) |
480b0c5b GV |
1260 | { |
1261 | ||
1262 | #ifdef PROCESSOR_INTEL_386 | |
1263 | case PROCESSOR_INTEL_386: | |
1264 | case PROCESSOR_INTEL_486: | |
1265 | case PROCESSOR_INTEL_PENTIUM: | |
1266 | arch = "i386"; | |
1267 | break; | |
1268 | #endif | |
1269 | ||
1270 | #ifdef PROCESSOR_INTEL_860 | |
1271 | case PROCESSOR_INTEL_860: | |
1272 | arch = "i860"; | |
1273 | break; | |
1274 | #endif | |
1275 | ||
1276 | #ifdef PROCESSOR_MIPS_R2000 | |
1277 | case PROCESSOR_MIPS_R2000: | |
1278 | case PROCESSOR_MIPS_R3000: | |
1279 | case PROCESSOR_MIPS_R4000: | |
1280 | arch = "mips"; | |
1281 | break; | |
1282 | #endif | |
1283 | ||
1284 | #ifdef PROCESSOR_ALPHA_21064 | |
1285 | case PROCESSOR_ALPHA_21064: | |
1286 | arch = "alpha"; | |
1287 | break; | |
1288 | #endif | |
1289 | ||
1290 | default: | |
1291 | arch = "unknown"; | |
1292 | break; | |
f332b293 | 1293 | } |
480b0c5b | 1294 | |
a302c7ae AI |
1295 | /* Use the OEM field to reflect the compiler/library combination. */ |
1296 | #ifdef _MSC_VER | |
1297 | #define COMPILER_NAME "msvc" | |
1298 | #else | |
1299 | #ifdef __GNUC__ | |
1300 | #define COMPILER_NAME "mingw" | |
1301 | #else | |
1302 | #define COMPILER_NAME "unknown" | |
1303 | #endif | |
1304 | #endif | |
1305 | oem = COMPILER_NAME; | |
480b0c5b | 1306 | |
c5247da2 GV |
1307 | switch (osinfo_cache.dwPlatformId) { |
1308 | case VER_PLATFORM_WIN32_NT: | |
1309 | os = "nt"; | |
1310 | build_num = osinfo_cache.dwBuildNumber; | |
1311 | break; | |
1312 | case VER_PLATFORM_WIN32_WINDOWS: | |
1313 | if (osinfo_cache.dwMinorVersion == 0) { | |
1314 | os = "windows95"; | |
1315 | } else { | |
1316 | os = "windows98"; | |
1317 | } | |
1318 | build_num = LOWORD (osinfo_cache.dwBuildNumber); | |
1319 | break; | |
1320 | case VER_PLATFORM_WIN32s: | |
1321 | /* Not supported, should not happen. */ | |
1322 | os = "windows32s"; | |
1323 | build_num = LOWORD (osinfo_cache.dwBuildNumber); | |
1324 | break; | |
1325 | default: | |
1326 | os = "unknown"; | |
1327 | build_num = 0; | |
1328 | break; | |
1329 | } | |
1330 | ||
1331 | if (osinfo_cache.dwPlatformId == VER_PLATFORM_WIN32_NT) { | |
1332 | sprintf (configuration_buffer, "%s-%s-%s%d.%d.%d", arch, oem, os, | |
1333 | get_w32_major_version (), get_w32_minor_version (), build_num); | |
1334 | } else { | |
1335 | sprintf (configuration_buffer, "%s-%s-%s.%d", arch, oem, os, build_num); | |
1336 | } | |
480b0c5b | 1337 | |
480b0c5b | 1338 | return configuration_buffer; |
f332b293 GV |
1339 | } |
1340 | ||
a302c7ae AI |
1341 | char * |
1342 | get_emacs_configuration_options (void) | |
1343 | { | |
1344 | static char options_buffer[256]; | |
1345 | ||
1346 | /* Work out the effective configure options for this build. */ | |
1347 | #ifdef _MSC_VER | |
1348 | #define COMPILER_VERSION "--with-msvc (%d.%02d)", _MSC_VER / 100, _MSC_VER % 100 | |
1349 | #else | |
1350 | #ifdef __GNUC__ | |
1351 | #define COMPILER_VERSION "--with-gcc (%d.%d)", __GNUC__, __GNUC_MINOR__ | |
1352 | #else | |
1353 | #define COMPILER_VERSION "" | |
1354 | #endif | |
1355 | #endif | |
1356 | ||
1357 | sprintf (options_buffer, COMPILER_VERSION); | |
1358 | #ifdef EMACSDEBUG | |
1359 | strcat (options_buffer, " --no-opt"); | |
1360 | #endif | |
1361 | #ifdef USER_CFLAGS | |
1362 | strcat (options_buffer, " --cflags"); | |
1363 | strcat (options_buffer, USER_CFLAGS); | |
1364 | #endif | |
1365 | #ifdef USER_LDFLAGS | |
1366 | strcat (options_buffer, " --ldflags"); | |
1367 | strcat (options_buffer, USER_LDFLAGS); | |
1368 | #endif | |
1369 | return options_buffer; | |
1370 | } | |
1371 | ||
1372 | ||
35f0d482 KH |
1373 | #include <sys/timeb.h> |
1374 | ||
1375 | /* Emulate gettimeofday (Ulrich Leodolter, 1/11/95). */ | |
177c0ea7 | 1376 | void |
35f0d482 KH |
1377 | gettimeofday (struct timeval *tv, struct timezone *tz) |
1378 | { | |
6e602566 | 1379 | struct _timeb tb; |
35f0d482 KH |
1380 | _ftime (&tb); |
1381 | ||
1382 | tv->tv_sec = tb.time; | |
1383 | tv->tv_usec = tb.millitm * 1000L; | |
177c0ea7 | 1384 | if (tz) |
35f0d482 KH |
1385 | { |
1386 | tz->tz_minuteswest = tb.timezone; /* minutes west of Greenwich */ | |
1387 | tz->tz_dsttime = tb.dstflag; /* type of dst correction */ | |
1388 | } | |
1389 | } | |
35f0d482 | 1390 | |
480b0c5b | 1391 | /* ------------------------------------------------------------------------- */ |
fbd6baed | 1392 | /* IO support and wrapper functions for W32 API. */ |
480b0c5b | 1393 | /* ------------------------------------------------------------------------- */ |
95ed0025 | 1394 | |
480b0c5b | 1395 | /* Place a wrapper around the MSVC version of ctime. It returns NULL |
177c0ea7 | 1396 | on network directories, so we handle that case here. |
480b0c5b GV |
1397 | (Ulrich Leodolter, 1/11/95). */ |
1398 | char * | |
1399 | sys_ctime (const time_t *t) | |
1400 | { | |
1401 | char *str = (char *) ctime (t); | |
1402 | return (str ? str : "Sun Jan 01 00:00:00 1970"); | |
1403 | } | |
1404 | ||
1405 | /* Emulate sleep...we could have done this with a define, but that | |
1406 | would necessitate including windows.h in the files that used it. | |
1407 | This is much easier. */ | |
1408 | void | |
1409 | sys_sleep (int seconds) | |
1410 | { | |
1411 | Sleep (seconds * 1000); | |
1412 | } | |
1413 | ||
76b3903d | 1414 | /* Internal MSVC functions for low-level descriptor munging */ |
480b0c5b GV |
1415 | extern int __cdecl _set_osfhnd (int fd, long h); |
1416 | extern int __cdecl _free_osfhnd (int fd); | |
1417 | ||
1418 | /* parallel array of private info on file handles */ | |
1419 | filedesc fd_info [ MAXDESC ]; | |
1420 | ||
76b3903d GV |
1421 | typedef struct volume_info_data { |
1422 | struct volume_info_data * next; | |
1423 | ||
1424 | /* time when info was obtained */ | |
1425 | DWORD timestamp; | |
1426 | ||
1427 | /* actual volume info */ | |
1428 | char * root_dir; | |
480b0c5b GV |
1429 | DWORD serialnum; |
1430 | DWORD maxcomp; | |
1431 | DWORD flags; | |
76b3903d GV |
1432 | char * name; |
1433 | char * type; | |
1434 | } volume_info_data; | |
1435 | ||
1436 | /* Global referenced by various functions. */ | |
1437 | static volume_info_data volume_info; | |
1438 | ||
1439 | /* Vector to indicate which drives are local and fixed (for which cached | |
1440 | data never expires). */ | |
1441 | static BOOL fixed_drives[26]; | |
1442 | ||
1443 | /* Consider cached volume information to be stale if older than 10s, | |
1444 | at least for non-local drives. Info for fixed drives is never stale. */ | |
1445 | #define DRIVE_INDEX( c ) ( (c) <= 'Z' ? (c) - 'A' : (c) - 'a' ) | |
1446 | #define VOLINFO_STILL_VALID( root_dir, info ) \ | |
1447 | ( ( isalpha (root_dir[0]) && \ | |
1448 | fixed_drives[ DRIVE_INDEX (root_dir[0]) ] ) \ | |
1449 | || GetTickCount () - info->timestamp < 10000 ) | |
1450 | ||
1451 | /* Cache support functions. */ | |
1452 | ||
1453 | /* Simple linked list with linear search is sufficient. */ | |
1454 | static volume_info_data *volume_cache = NULL; | |
1455 | ||
1456 | static volume_info_data * | |
1457 | lookup_volume_info (char * root_dir) | |
1458 | { | |
1459 | volume_info_data * info; | |
1460 | ||
1461 | for (info = volume_cache; info; info = info->next) | |
1462 | if (stricmp (info->root_dir, root_dir) == 0) | |
1463 | break; | |
1464 | return info; | |
1465 | } | |
1466 | ||
1467 | static void | |
1468 | add_volume_info (char * root_dir, volume_info_data * info) | |
1469 | { | |
a302c7ae | 1470 | info->root_dir = xstrdup (root_dir); |
76b3903d GV |
1471 | info->next = volume_cache; |
1472 | volume_cache = info; | |
1473 | } | |
1474 | ||
1475 | ||
1476 | /* Wrapper for GetVolumeInformation, which uses caching to avoid | |
1477 | performance penalty (~2ms on 486 for local drives, 7.5ms for local | |
1478 | cdrom drive, ~5-10ms or more for remote drives on LAN). */ | |
1479 | volume_info_data * | |
1480 | GetCachedVolumeInformation (char * root_dir) | |
1481 | { | |
1482 | volume_info_data * info; | |
1483 | char default_root[ MAX_PATH ]; | |
1484 | ||
1485 | /* NULL for root_dir means use root from current directory. */ | |
1486 | if (root_dir == NULL) | |
1487 | { | |
1488 | if (GetCurrentDirectory (MAX_PATH, default_root) == 0) | |
1489 | return NULL; | |
1490 | parse_root (default_root, &root_dir); | |
1491 | *root_dir = 0; | |
1492 | root_dir = default_root; | |
1493 | } | |
1494 | ||
1495 | /* Local fixed drives can be cached permanently. Removable drives | |
1496 | cannot be cached permanently, since the volume name and serial | |
1497 | number (if nothing else) can change. Remote drives should be | |
1498 | treated as if they are removable, since there is no sure way to | |
1499 | tell whether they are or not. Also, the UNC association of drive | |
1500 | letters mapped to remote volumes can be changed at any time (even | |
1501 | by other processes) without notice. | |
177c0ea7 | 1502 | |
76b3903d GV |
1503 | As a compromise, so we can benefit from caching info for remote |
1504 | volumes, we use a simple expiry mechanism to invalidate cache | |
1505 | entries that are more than ten seconds old. */ | |
1506 | ||
1507 | #if 0 | |
1508 | /* No point doing this, because WNetGetConnection is even slower than | |
1509 | GetVolumeInformation, consistently taking ~50ms on a 486 (FWIW, | |
1510 | GetDriveType is about the only call of this type which does not | |
1511 | involve network access, and so is extremely quick). */ | |
1512 | ||
1513 | /* Map drive letter to UNC if remote. */ | |
1514 | if ( isalpha( root_dir[0] ) && !fixed[ DRIVE_INDEX( root_dir[0] ) ] ) | |
1515 | { | |
1516 | char remote_name[ 256 ]; | |
1517 | char drive[3] = { root_dir[0], ':' }; | |
1518 | ||
1519 | if (WNetGetConnection (drive, remote_name, sizeof (remote_name)) | |
1520 | == NO_ERROR) | |
1521 | /* do something */ ; | |
1522 | } | |
1523 | #endif | |
1524 | ||
1525 | info = lookup_volume_info (root_dir); | |
1526 | ||
1527 | if (info == NULL || ! VOLINFO_STILL_VALID (root_dir, info)) | |
1528 | { | |
1529 | char name[ 256 ]; | |
1530 | DWORD serialnum; | |
1531 | DWORD maxcomp; | |
1532 | DWORD flags; | |
1533 | char type[ 256 ]; | |
1534 | ||
1535 | /* Info is not cached, or is stale. */ | |
1536 | if (!GetVolumeInformation (root_dir, | |
1537 | name, sizeof (name), | |
1538 | &serialnum, | |
1539 | &maxcomp, | |
1540 | &flags, | |
1541 | type, sizeof (type))) | |
1542 | return NULL; | |
1543 | ||
1544 | /* Cache the volume information for future use, overwriting existing | |
1545 | entry if present. */ | |
1546 | if (info == NULL) | |
1547 | { | |
1548 | info = (volume_info_data *) xmalloc (sizeof (volume_info_data)); | |
1549 | add_volume_info (root_dir, info); | |
1550 | } | |
1551 | else | |
1552 | { | |
a302c7ae AI |
1553 | xfree (info->name); |
1554 | xfree (info->type); | |
76b3903d GV |
1555 | } |
1556 | ||
a302c7ae | 1557 | info->name = xstrdup (name); |
76b3903d GV |
1558 | info->serialnum = serialnum; |
1559 | info->maxcomp = maxcomp; | |
1560 | info->flags = flags; | |
a302c7ae | 1561 | info->type = xstrdup (type); |
76b3903d GV |
1562 | info->timestamp = GetTickCount (); |
1563 | } | |
1564 | ||
1565 | return info; | |
1566 | } | |
480b0c5b GV |
1567 | |
1568 | /* Get information on the volume where name is held; set path pointer to | |
1569 | start of pathname in name (past UNC header\volume header if present). */ | |
1570 | int | |
1571 | get_volume_info (const char * name, const char ** pPath) | |
95ed0025 | 1572 | { |
480b0c5b GV |
1573 | char temp[MAX_PATH]; |
1574 | char *rootname = NULL; /* default to current volume */ | |
76b3903d | 1575 | volume_info_data * info; |
480b0c5b GV |
1576 | |
1577 | if (name == NULL) | |
1578 | return FALSE; | |
1579 | ||
1580 | /* find the root name of the volume if given */ | |
1581 | if (isalpha (name[0]) && name[1] == ':') | |
1582 | { | |
1583 | rootname = temp; | |
1584 | temp[0] = *name++; | |
1585 | temp[1] = *name++; | |
1586 | temp[2] = '\\'; | |
1587 | temp[3] = 0; | |
1588 | } | |
1589 | else if (IS_DIRECTORY_SEP (name[0]) && IS_DIRECTORY_SEP (name[1])) | |
95ed0025 | 1590 | { |
480b0c5b GV |
1591 | char *str = temp; |
1592 | int slashes = 4; | |
1593 | rootname = temp; | |
1594 | do | |
1595 | { | |
1596 | if (IS_DIRECTORY_SEP (*name) && --slashes == 0) | |
1597 | break; | |
1598 | *str++ = *name++; | |
1599 | } | |
1600 | while ( *name ); | |
1601 | ||
480b0c5b GV |
1602 | *str++ = '\\'; |
1603 | *str = 0; | |
95ed0025 | 1604 | } |
480b0c5b GV |
1605 | |
1606 | if (pPath) | |
1607 | *pPath = name; | |
177c0ea7 | 1608 | |
76b3903d GV |
1609 | info = GetCachedVolumeInformation (rootname); |
1610 | if (info != NULL) | |
95ed0025 | 1611 | { |
76b3903d GV |
1612 | /* Set global referenced by other functions. */ |
1613 | volume_info = *info; | |
480b0c5b | 1614 | return TRUE; |
95ed0025 | 1615 | } |
480b0c5b GV |
1616 | return FALSE; |
1617 | } | |
1618 | ||
1619 | /* Determine if volume is FAT format (ie. only supports short 8.3 | |
1620 | names); also set path pointer to start of pathname in name. */ | |
1621 | int | |
1622 | is_fat_volume (const char * name, const char ** pPath) | |
1623 | { | |
1624 | if (get_volume_info (name, pPath)) | |
1625 | return (volume_info.maxcomp == 12); | |
1626 | return FALSE; | |
1627 | } | |
1628 | ||
1629 | /* Map filename to a legal 8.3 name if necessary. */ | |
1630 | const char * | |
fbd6baed | 1631 | map_w32_filename (const char * name, const char ** pPath) |
480b0c5b GV |
1632 | { |
1633 | static char shortname[MAX_PATH]; | |
1634 | char * str = shortname; | |
1635 | char c; | |
480b0c5b | 1636 | char * path; |
76b3903d | 1637 | const char * save_name = name; |
480b0c5b | 1638 | |
ca149beb AI |
1639 | if (strlen (name) >= MAX_PATH) |
1640 | { | |
1641 | /* Return a filename which will cause callers to fail. */ | |
1642 | strcpy (shortname, "?"); | |
1643 | return shortname; | |
1644 | } | |
1645 | ||
a302c7ae | 1646 | if (is_fat_volume (name, (const char **)&path)) /* truncate to 8.3 */ |
95ed0025 | 1647 | { |
480b0c5b GV |
1648 | register int left = 8; /* maximum number of chars in part */ |
1649 | register int extn = 0; /* extension added? */ | |
1650 | register int dots = 2; /* maximum number of dots allowed */ | |
1651 | ||
1652 | while (name < path) | |
1653 | *str++ = *name++; /* skip past UNC header */ | |
1654 | ||
1655 | while ((c = *name++)) | |
1656 | { | |
1657 | switch ( c ) | |
1658 | { | |
1659 | case '\\': | |
1660 | case '/': | |
1661 | *str++ = '\\'; | |
1662 | extn = 0; /* reset extension flags */ | |
1663 | dots = 2; /* max 2 dots */ | |
1664 | left = 8; /* max length 8 for main part */ | |
1665 | break; | |
1666 | case ':': | |
1667 | *str++ = ':'; | |
1668 | extn = 0; /* reset extension flags */ | |
1669 | dots = 2; /* max 2 dots */ | |
1670 | left = 8; /* max length 8 for main part */ | |
1671 | break; | |
1672 | case '.': | |
1673 | if ( dots ) | |
1674 | { | |
1675 | /* Convert path components of the form .xxx to _xxx, | |
1676 | but leave . and .. as they are. This allows .emacs | |
1677 | to be read as _emacs, for example. */ | |
1678 | ||
1679 | if (! *name || | |
1680 | *name == '.' || | |
1681 | IS_DIRECTORY_SEP (*name)) | |
1682 | { | |
1683 | *str++ = '.'; | |
1684 | dots--; | |
1685 | } | |
1686 | else | |
1687 | { | |
1688 | *str++ = '_'; | |
1689 | left--; | |
1690 | dots = 0; | |
1691 | } | |
1692 | } | |
1693 | else if ( !extn ) | |
1694 | { | |
1695 | *str++ = '.'; | |
1696 | extn = 1; /* we've got an extension */ | |
1697 | left = 3; /* 3 chars in extension */ | |
1698 | } | |
1699 | else | |
1700 | { | |
1701 | /* any embedded dots after the first are converted to _ */ | |
1702 | *str++ = '_'; | |
1703 | } | |
1704 | break; | |
1705 | case '~': | |
1706 | case '#': /* don't lose these, they're important */ | |
1707 | if ( ! left ) | |
1708 | str[-1] = c; /* replace last character of part */ | |
1709 | /* FALLTHRU */ | |
1710 | default: | |
1711 | if ( left ) | |
1712 | { | |
1713 | *str++ = tolower (c); /* map to lower case (looks nicer) */ | |
1714 | left--; | |
1715 | dots = 0; /* started a path component */ | |
1716 | } | |
1717 | break; | |
1718 | } | |
1719 | } | |
1720 | *str = '\0'; | |
fc85cb29 RS |
1721 | } |
1722 | else | |
1723 | { | |
1724 | strcpy (shortname, name); | |
1725 | unixtodos_filename (shortname); | |
95ed0025 | 1726 | } |
480b0c5b GV |
1727 | |
1728 | if (pPath) | |
76b3903d | 1729 | *pPath = shortname + (path - save_name); |
480b0c5b | 1730 | |
fc85cb29 | 1731 | return shortname; |
480b0c5b GV |
1732 | } |
1733 | ||
b3308d2e KH |
1734 | static int |
1735 | is_exec (const char * name) | |
1736 | { | |
1737 | char * p = strrchr (name, '.'); | |
1738 | return | |
1739 | (p != NULL | |
1740 | && (stricmp (p, ".exe") == 0 || | |
1741 | stricmp (p, ".com") == 0 || | |
1742 | stricmp (p, ".bat") == 0 || | |
1743 | stricmp (p, ".cmd") == 0)); | |
1744 | } | |
1745 | ||
177c0ea7 | 1746 | /* Emulate the Unix directory procedures opendir, closedir, |
76b3903d GV |
1747 | and readdir. We can't use the procedures supplied in sysdep.c, |
1748 | so we provide them here. */ | |
1749 | ||
1750 | struct direct dir_static; /* simulated directory contents */ | |
1751 | static HANDLE dir_find_handle = INVALID_HANDLE_VALUE; | |
1752 | static int dir_is_fat; | |
1753 | static char dir_pathname[MAXPATHLEN+1]; | |
1754 | static WIN32_FIND_DATA dir_find_data; | |
1755 | ||
9d3355d1 GV |
1756 | /* Support shares on a network resource as subdirectories of a read-only |
1757 | root directory. */ | |
1758 | static HANDLE wnet_enum_handle = INVALID_HANDLE_VALUE; | |
e0c181dd | 1759 | HANDLE open_unc_volume (const char *); |
9d3355d1 GV |
1760 | char *read_unc_volume (HANDLE, char *, int); |
1761 | void close_unc_volume (HANDLE); | |
1762 | ||
76b3903d GV |
1763 | DIR * |
1764 | opendir (char *filename) | |
1765 | { | |
1766 | DIR *dirp; | |
1767 | ||
1768 | /* Opening is done by FindFirstFile. However, a read is inherent to | |
1769 | this operation, so we defer the open until read time. */ | |
1770 | ||
76b3903d GV |
1771 | if (dir_find_handle != INVALID_HANDLE_VALUE) |
1772 | return NULL; | |
9d3355d1 GV |
1773 | if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
1774 | return NULL; | |
1775 | ||
1776 | if (is_unc_volume (filename)) | |
1777 | { | |
1778 | wnet_enum_handle = open_unc_volume (filename); | |
1779 | if (wnet_enum_handle == INVALID_HANDLE_VALUE) | |
1780 | return NULL; | |
1781 | } | |
1782 | ||
1783 | if (!(dirp = (DIR *) malloc (sizeof (DIR)))) | |
1784 | return NULL; | |
76b3903d GV |
1785 | |
1786 | dirp->dd_fd = 0; | |
1787 | dirp->dd_loc = 0; | |
1788 | dirp->dd_size = 0; | |
1789 | ||
1790 | strncpy (dir_pathname, map_w32_filename (filename, NULL), MAXPATHLEN); | |
1791 | dir_pathname[MAXPATHLEN] = '\0'; | |
1792 | dir_is_fat = is_fat_volume (filename, NULL); | |
1793 | ||
1794 | return dirp; | |
1795 | } | |
1796 | ||
1797 | void | |
1798 | closedir (DIR *dirp) | |
1799 | { | |
1800 | /* If we have a find-handle open, close it. */ | |
1801 | if (dir_find_handle != INVALID_HANDLE_VALUE) | |
1802 | { | |
1803 | FindClose (dir_find_handle); | |
1804 | dir_find_handle = INVALID_HANDLE_VALUE; | |
1805 | } | |
9d3355d1 GV |
1806 | else if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
1807 | { | |
1808 | close_unc_volume (wnet_enum_handle); | |
1809 | wnet_enum_handle = INVALID_HANDLE_VALUE; | |
1810 | } | |
76b3903d GV |
1811 | xfree ((char *) dirp); |
1812 | } | |
1813 | ||
1814 | struct direct * | |
1815 | readdir (DIR *dirp) | |
1816 | { | |
9d3355d1 GV |
1817 | if (wnet_enum_handle != INVALID_HANDLE_VALUE) |
1818 | { | |
177c0ea7 JB |
1819 | if (!read_unc_volume (wnet_enum_handle, |
1820 | dir_find_data.cFileName, | |
9d3355d1 GV |
1821 | MAX_PATH)) |
1822 | return NULL; | |
1823 | } | |
76b3903d | 1824 | /* If we aren't dir_finding, do a find-first, otherwise do a find-next. */ |
9d3355d1 | 1825 | else if (dir_find_handle == INVALID_HANDLE_VALUE) |
76b3903d GV |
1826 | { |
1827 | char filename[MAXNAMLEN + 3]; | |
1828 | int ln; | |
1829 | ||
1830 | strcpy (filename, dir_pathname); | |
1831 | ln = strlen (filename) - 1; | |
1832 | if (!IS_DIRECTORY_SEP (filename[ln])) | |
1833 | strcat (filename, "\\"); | |
1834 | strcat (filename, "*"); | |
1835 | ||
1836 | dir_find_handle = FindFirstFile (filename, &dir_find_data); | |
1837 | ||
1838 | if (dir_find_handle == INVALID_HANDLE_VALUE) | |
1839 | return NULL; | |
1840 | } | |
1841 | else | |
1842 | { | |
1843 | if (!FindNextFile (dir_find_handle, &dir_find_data)) | |
1844 | return NULL; | |
1845 | } | |
177c0ea7 | 1846 | |
76b3903d GV |
1847 | /* Emacs never uses this value, so don't bother making it match |
1848 | value returned by stat(). */ | |
1849 | dir_static.d_ino = 1; | |
177c0ea7 | 1850 | |
76b3903d GV |
1851 | dir_static.d_reclen = sizeof (struct direct) - MAXNAMLEN + 3 + |
1852 | dir_static.d_namlen - dir_static.d_namlen % 4; | |
177c0ea7 | 1853 | |
76b3903d GV |
1854 | dir_static.d_namlen = strlen (dir_find_data.cFileName); |
1855 | strcpy (dir_static.d_name, dir_find_data.cFileName); | |
1856 | if (dir_is_fat) | |
1857 | _strlwr (dir_static.d_name); | |
1858 | else if (!NILP (Vw32_downcase_file_names)) | |
1859 | { | |
1860 | register char *p; | |
1861 | for (p = dir_static.d_name; *p; p++) | |
1862 | if (*p >= 'a' && *p <= 'z') | |
1863 | break; | |
1864 | if (!*p) | |
1865 | _strlwr (dir_static.d_name); | |
1866 | } | |
177c0ea7 | 1867 | |
76b3903d GV |
1868 | return &dir_static; |
1869 | } | |
1870 | ||
9d3355d1 | 1871 | HANDLE |
e0c181dd | 1872 | open_unc_volume (const char *path) |
9d3355d1 | 1873 | { |
177c0ea7 | 1874 | NETRESOURCE nr; |
9d3355d1 GV |
1875 | HANDLE henum; |
1876 | int result; | |
1877 | ||
177c0ea7 JB |
1878 | nr.dwScope = RESOURCE_GLOBALNET; |
1879 | nr.dwType = RESOURCETYPE_DISK; | |
1880 | nr.dwDisplayType = RESOURCEDISPLAYTYPE_SERVER; | |
1881 | nr.dwUsage = RESOURCEUSAGE_CONTAINER; | |
1882 | nr.lpLocalName = NULL; | |
6e602566 | 1883 | nr.lpRemoteName = (LPSTR)map_w32_filename (path, NULL); |
177c0ea7 JB |
1884 | nr.lpComment = NULL; |
1885 | nr.lpProvider = NULL; | |
9d3355d1 | 1886 | |
177c0ea7 | 1887 | result = WNetOpenEnum(RESOURCE_GLOBALNET, RESOURCETYPE_DISK, |
9d3355d1 GV |
1888 | RESOURCEUSAGE_CONNECTABLE, &nr, &henum); |
1889 | ||
1890 | if (result == NO_ERROR) | |
1891 | return henum; | |
1892 | else | |
1893 | return INVALID_HANDLE_VALUE; | |
1894 | } | |
1895 | ||
1896 | char * | |
1897 | read_unc_volume (HANDLE henum, char *readbuf, int size) | |
1898 | { | |
a302c7ae | 1899 | DWORD count; |
9d3355d1 | 1900 | int result; |
a302c7ae | 1901 | DWORD bufsize = 512; |
9d3355d1 GV |
1902 | char *buffer; |
1903 | char *ptr; | |
1904 | ||
1905 | count = 1; | |
1906 | buffer = alloca (bufsize); | |
1907 | result = WNetEnumResource (wnet_enum_handle, &count, buffer, &bufsize); | |
1908 | if (result != NO_ERROR) | |
1909 | return NULL; | |
1910 | ||
1911 | /* WNetEnumResource returns \\resource\share...skip forward to "share". */ | |
1912 | ptr = ((LPNETRESOURCE) buffer)->lpRemoteName; | |
1913 | ptr += 2; | |
1914 | while (*ptr && !IS_DIRECTORY_SEP (*ptr)) ptr++; | |
1915 | ptr++; | |
1916 | ||
1917 | strncpy (readbuf, ptr, size); | |
1918 | return readbuf; | |
1919 | } | |
1920 | ||
1921 | void | |
1922 | close_unc_volume (HANDLE henum) | |
1923 | { | |
1924 | if (henum != INVALID_HANDLE_VALUE) | |
1925 | WNetCloseEnum (henum); | |
1926 | } | |
1927 | ||
1928 | DWORD | |
e0c181dd | 1929 | unc_volume_file_attributes (const char *path) |
9d3355d1 GV |
1930 | { |
1931 | HANDLE henum; | |
1932 | DWORD attrs; | |
1933 | ||
1934 | henum = open_unc_volume (path); | |
1935 | if (henum == INVALID_HANDLE_VALUE) | |
1936 | return -1; | |
1937 | ||
1938 | attrs = FILE_ATTRIBUTE_READONLY | FILE_ATTRIBUTE_DIRECTORY; | |
1939 | ||
1940 | close_unc_volume (henum); | |
1941 | ||
1942 | return attrs; | |
1943 | } | |
1944 | ||
480b0c5b GV |
1945 | |
1946 | /* Shadow some MSVC runtime functions to map requests for long filenames | |
1947 | to reasonable short names if necessary. This was originally added to | |
177c0ea7 | 1948 | permit running Emacs on NT 3.1 on a FAT partition, which doesn't support |
480b0c5b GV |
1949 | long file names. */ |
1950 | ||
1951 | int | |
1952 | sys_access (const char * path, int mode) | |
1953 | { | |
b3308d2e KH |
1954 | DWORD attributes; |
1955 | ||
1956 | /* MSVC implementation doesn't recognize D_OK. */ | |
1957 | path = map_w32_filename (path, NULL); | |
9d3355d1 GV |
1958 | if (is_unc_volume (path)) |
1959 | { | |
1960 | attributes = unc_volume_file_attributes (path); | |
1961 | if (attributes == -1) { | |
1962 | errno = EACCES; | |
1963 | return -1; | |
1964 | } | |
1965 | } | |
1966 | else if ((attributes = GetFileAttributes (path)) == -1) | |
b3308d2e KH |
1967 | { |
1968 | /* Should try mapping GetLastError to errno; for now just indicate | |
1969 | that path doesn't exist. */ | |
1970 | errno = EACCES; | |
1971 | return -1; | |
1972 | } | |
1973 | if ((mode & X_OK) != 0 && !is_exec (path)) | |
1974 | { | |
1975 | errno = EACCES; | |
1976 | return -1; | |
1977 | } | |
1978 | if ((mode & W_OK) != 0 && (attributes & FILE_ATTRIBUTE_READONLY) != 0) | |
1979 | { | |
1980 | errno = EACCES; | |
1981 | return -1; | |
1982 | } | |
1983 | if ((mode & D_OK) != 0 && (attributes & FILE_ATTRIBUTE_DIRECTORY) == 0) | |
1984 | { | |
1985 | errno = EACCES; | |
1986 | return -1; | |
1987 | } | |
1988 | return 0; | |
480b0c5b GV |
1989 | } |
1990 | ||
1991 | int | |
1992 | sys_chdir (const char * path) | |
1993 | { | |
fbd6baed | 1994 | return _chdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
1995 | } |
1996 | ||
1997 | int | |
1998 | sys_chmod (const char * path, int mode) | |
1999 | { | |
fbd6baed | 2000 | return _chmod (map_w32_filename (path, NULL), mode); |
480b0c5b GV |
2001 | } |
2002 | ||
2d5ab4bf EZ |
2003 | int |
2004 | sys_chown (const char *path, uid_t owner, gid_t group) | |
2005 | { | |
2006 | if (sys_chmod (path, _S_IREAD) == -1) /* check if file exists */ | |
2007 | return -1; | |
2008 | return 0; | |
2009 | } | |
2010 | ||
480b0c5b GV |
2011 | int |
2012 | sys_creat (const char * path, int mode) | |
2013 | { | |
fbd6baed | 2014 | return _creat (map_w32_filename (path, NULL), mode); |
480b0c5b GV |
2015 | } |
2016 | ||
2017 | FILE * | |
2018 | sys_fopen(const char * path, const char * mode) | |
2019 | { | |
2020 | int fd; | |
2021 | int oflag; | |
2022 | const char * mode_save = mode; | |
2023 | ||
2024 | /* Force all file handles to be non-inheritable. This is necessary to | |
2025 | ensure child processes don't unwittingly inherit handles that might | |
2026 | prevent future file access. */ | |
2027 | ||
2028 | if (mode[0] == 'r') | |
2029 | oflag = O_RDONLY; | |
2030 | else if (mode[0] == 'w' || mode[0] == 'a') | |
2031 | oflag = O_WRONLY | O_CREAT | O_TRUNC; | |
95ed0025 | 2032 | else |
480b0c5b GV |
2033 | return NULL; |
2034 | ||
2035 | /* Only do simplistic option parsing. */ | |
2036 | while (*++mode) | |
2037 | if (mode[0] == '+') | |
2038 | { | |
2039 | oflag &= ~(O_RDONLY | O_WRONLY); | |
2040 | oflag |= O_RDWR; | |
2041 | } | |
2042 | else if (mode[0] == 'b') | |
2043 | { | |
2044 | oflag &= ~O_TEXT; | |
2045 | oflag |= O_BINARY; | |
2046 | } | |
2047 | else if (mode[0] == 't') | |
2048 | { | |
2049 | oflag &= ~O_BINARY; | |
2050 | oflag |= O_TEXT; | |
2051 | } | |
2052 | else break; | |
2053 | ||
fbd6baed | 2054 | fd = _open (map_w32_filename (path, NULL), oflag | _O_NOINHERIT, 0644); |
480b0c5b GV |
2055 | if (fd < 0) |
2056 | return NULL; | |
2057 | ||
76b3903d | 2058 | return _fdopen (fd, mode_save); |
95ed0025 | 2059 | } |
480b0c5b | 2060 | |
76b3903d | 2061 | /* This only works on NTFS volumes, but is useful to have. */ |
480b0c5b | 2062 | int |
76b3903d | 2063 | sys_link (const char * old, const char * new) |
480b0c5b | 2064 | { |
76b3903d GV |
2065 | HANDLE fileh; |
2066 | int result = -1; | |
2067 | char oldname[MAX_PATH], newname[MAX_PATH]; | |
2068 | ||
2069 | if (old == NULL || new == NULL) | |
2070 | { | |
2071 | errno = ENOENT; | |
2072 | return -1; | |
2073 | } | |
2074 | ||
2075 | strcpy (oldname, map_w32_filename (old, NULL)); | |
2076 | strcpy (newname, map_w32_filename (new, NULL)); | |
2077 | ||
2078 | fileh = CreateFile (oldname, 0, 0, NULL, OPEN_EXISTING, | |
2079 | FILE_FLAG_BACKUP_SEMANTICS, NULL); | |
2080 | if (fileh != INVALID_HANDLE_VALUE) | |
2081 | { | |
2082 | int wlen; | |
2083 | ||
2084 | /* Confusingly, the "alternate" stream name field does not apply | |
2085 | when restoring a hard link, and instead contains the actual | |
2086 | stream data for the link (ie. the name of the link to create). | |
2087 | The WIN32_STREAM_ID structure before the cStreamName field is | |
2088 | the stream header, which is then immediately followed by the | |
2089 | stream data. */ | |
2090 | ||
2091 | struct { | |
2092 | WIN32_STREAM_ID wid; | |
2093 | WCHAR wbuffer[MAX_PATH]; /* extra space for link name */ | |
2094 | } data; | |
2095 | ||
2096 | wlen = MultiByteToWideChar (CP_ACP, MB_PRECOMPOSED, newname, -1, | |
2097 | data.wid.cStreamName, MAX_PATH); | |
2098 | if (wlen > 0) | |
2099 | { | |
2100 | LPVOID context = NULL; | |
2101 | DWORD wbytes = 0; | |
2102 | ||
2103 | data.wid.dwStreamId = BACKUP_LINK; | |
2104 | data.wid.dwStreamAttributes = 0; | |
2105 | data.wid.Size.LowPart = wlen * sizeof(WCHAR); | |
2106 | data.wid.Size.HighPart = 0; | |
2107 | data.wid.dwStreamNameSize = 0; | |
2108 | ||
2109 | if (BackupWrite (fileh, (LPBYTE)&data, | |
2110 | offsetof (WIN32_STREAM_ID, cStreamName) | |
2111 | + data.wid.Size.LowPart, | |
2112 | &wbytes, FALSE, FALSE, &context) | |
2113 | && BackupWrite (fileh, NULL, 0, &wbytes, TRUE, FALSE, &context)) | |
2114 | { | |
2115 | /* succeeded */ | |
2116 | result = 0; | |
2117 | } | |
2118 | else | |
2119 | { | |
2120 | /* Should try mapping GetLastError to errno; for now just | |
2121 | indicate a general error (eg. links not supported). */ | |
2122 | errno = EINVAL; // perhaps EMLINK? | |
2123 | } | |
2124 | } | |
2125 | ||
2126 | CloseHandle (fileh); | |
2127 | } | |
2128 | else | |
2129 | errno = ENOENT; | |
2130 | ||
2131 | return result; | |
480b0c5b GV |
2132 | } |
2133 | ||
2134 | int | |
2135 | sys_mkdir (const char * path) | |
2136 | { | |
fbd6baed | 2137 | return _mkdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
2138 | } |
2139 | ||
9d1778b1 RS |
2140 | /* Because of long name mapping issues, we need to implement this |
2141 | ourselves. Also, MSVC's _mktemp returns NULL when it can't generate | |
2142 | a unique name, instead of setting the input template to an empty | |
2143 | string. | |
2144 | ||
2145 | Standard algorithm seems to be use pid or tid with a letter on the | |
2146 | front (in place of the 6 X's) and cycle through the letters to find a | |
2147 | unique name. We extend that to allow any reasonable character as the | |
2148 | first of the 6 X's. */ | |
480b0c5b GV |
2149 | char * |
2150 | sys_mktemp (char * template) | |
2151 | { | |
9d1778b1 RS |
2152 | char * p; |
2153 | int i; | |
2154 | unsigned uid = GetCurrentThreadId (); | |
2155 | static char first_char[] = "abcdefghijklmnopqrstuvwyz0123456789!%-_@#"; | |
2156 | ||
2157 | if (template == NULL) | |
2158 | return NULL; | |
2159 | p = template + strlen (template); | |
2160 | i = 5; | |
2161 | /* replace up to the last 5 X's with uid in decimal */ | |
2162 | while (--p >= template && p[0] == 'X' && --i >= 0) | |
2163 | { | |
2164 | p[0] = '0' + uid % 10; | |
2165 | uid /= 10; | |
2166 | } | |
2167 | ||
2168 | if (i < 0 && p[0] == 'X') | |
2169 | { | |
2170 | i = 0; | |
2171 | do | |
2172 | { | |
2173 | int save_errno = errno; | |
2174 | p[0] = first_char[i]; | |
2175 | if (sys_access (template, 0) < 0) | |
2176 | { | |
2177 | errno = save_errno; | |
2178 | return template; | |
2179 | } | |
2180 | } | |
2181 | while (++i < sizeof (first_char)); | |
2182 | } | |
2183 | ||
2184 | /* Template is badly formed or else we can't generate a unique name, | |
2185 | so return empty string */ | |
2186 | template[0] = 0; | |
2187 | return template; | |
480b0c5b GV |
2188 | } |
2189 | ||
2190 | int | |
2191 | sys_open (const char * path, int oflag, int mode) | |
2192 | { | |
302f0b29 GM |
2193 | const char* mpath = map_w32_filename (path, NULL); |
2194 | /* Try to open file without _O_CREAT, to be able to write to hidden | |
2195 | and system files. Force all file handles to be | |
2196 | non-inheritable. */ | |
2197 | int res = _open (mpath, (oflag & ~_O_CREAT) | _O_NOINHERIT, mode); | |
2198 | if (res >= 0) | |
2199 | return res; | |
2200 | return _open (mpath, oflag | _O_NOINHERIT, mode); | |
480b0c5b GV |
2201 | } |
2202 | ||
2203 | int | |
2204 | sys_rename (const char * oldname, const char * newname) | |
2205 | { | |
cfb5e855 | 2206 | BOOL result; |
b3308d2e | 2207 | char temp[MAX_PATH]; |
480b0c5b | 2208 | |
e9e23e23 | 2209 | /* MoveFile on Windows 95 doesn't correctly change the short file name |
5162ffce MB |
2210 | alias in a number of circumstances (it is not easy to predict when |
2211 | just by looking at oldname and newname, unfortunately). In these | |
2212 | cases, renaming through a temporary name avoids the problem. | |
2213 | ||
e9e23e23 | 2214 | A second problem on Windows 95 is that renaming through a temp name when |
5162ffce MB |
2215 | newname is uppercase fails (the final long name ends up in |
2216 | lowercase, although the short alias might be uppercase) UNLESS the | |
2217 | long temp name is not 8.3. | |
2218 | ||
e9e23e23 | 2219 | So, on Windows 95 we always rename through a temp name, and we make sure |
5162ffce | 2220 | the temp name has a long extension to ensure correct renaming. */ |
480b0c5b | 2221 | |
fbd6baed | 2222 | strcpy (temp, map_w32_filename (oldname, NULL)); |
480b0c5b | 2223 | |
76b3903d | 2224 | if (os_subtype == OS_WIN95) |
480b0c5b | 2225 | { |
b3308d2e | 2226 | char * o; |
480b0c5b | 2227 | char * p; |
b3308d2e KH |
2228 | int i = 0; |
2229 | ||
2230 | oldname = map_w32_filename (oldname, NULL); | |
2231 | if (o = strrchr (oldname, '\\')) | |
2232 | o++; | |
2233 | else | |
2234 | o = (char *) oldname; | |
480b0c5b | 2235 | |
480b0c5b GV |
2236 | if (p = strrchr (temp, '\\')) |
2237 | p++; | |
2238 | else | |
2239 | p = temp; | |
b3308d2e KH |
2240 | |
2241 | do | |
2242 | { | |
2243 | /* Force temp name to require a manufactured 8.3 alias - this | |
2244 | seems to make the second rename work properly. */ | |
f313ee82 | 2245 | sprintf (p, "_.%s.%u", o, i); |
b3308d2e | 2246 | i++; |
58f0cb7e | 2247 | result = rename (oldname, temp); |
b3308d2e KH |
2248 | } |
2249 | /* This loop must surely terminate! */ | |
cfb5e855 | 2250 | while (result < 0 && errno == EEXIST); |
58f0cb7e | 2251 | if (result < 0) |
480b0c5b GV |
2252 | return -1; |
2253 | } | |
2254 | ||
2255 | /* Emulate Unix behaviour - newname is deleted if it already exists | |
5162ffce | 2256 | (at least if it is a file; don't do this for directories). |
76b3903d | 2257 | |
b3308d2e KH |
2258 | Since we mustn't do this if we are just changing the case of the |
2259 | file name (we would end up deleting the file we are trying to | |
2260 | rename!), we let rename detect if the destination file already | |
2261 | exists - that way we avoid the possible pitfalls of trying to | |
2262 | determine ourselves whether two names really refer to the same | |
2263 | file, which is not always possible in the general case. (Consider | |
2264 | all the permutations of shared or subst'd drives, etc.) */ | |
2265 | ||
2266 | newname = map_w32_filename (newname, NULL); | |
eb9ea53f | 2267 | result = rename (temp, newname); |
b3308d2e KH |
2268 | |
2269 | if (result < 0 | |
cfb5e855 | 2270 | && errno == EEXIST |
b3308d2e KH |
2271 | && _chmod (newname, 0666) == 0 |
2272 | && _unlink (newname) == 0) | |
2273 | result = rename (temp, newname); | |
480b0c5b | 2274 | |
eb9ea53f | 2275 | return result; |
480b0c5b GV |
2276 | } |
2277 | ||
2278 | int | |
2279 | sys_rmdir (const char * path) | |
2280 | { | |
fbd6baed | 2281 | return _rmdir (map_w32_filename (path, NULL)); |
480b0c5b GV |
2282 | } |
2283 | ||
2284 | int | |
2285 | sys_unlink (const char * path) | |
2286 | { | |
16bb7578 GV |
2287 | path = map_w32_filename (path, NULL); |
2288 | ||
2289 | /* On Unix, unlink works without write permission. */ | |
2290 | _chmod (path, 0666); | |
2291 | return _unlink (path); | |
480b0c5b GV |
2292 | } |
2293 | ||
2294 | static FILETIME utc_base_ft; | |
2295 | static long double utc_base; | |
2296 | static int init = 0; | |
2297 | ||
2298 | static time_t | |
2299 | convert_time (FILETIME ft) | |
2300 | { | |
2301 | long double ret; | |
2302 | ||
2303 | if (!init) | |
2304 | { | |
2305 | /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */ | |
2306 | SYSTEMTIME st; | |
2307 | ||
2308 | st.wYear = 1970; | |
2309 | st.wMonth = 1; | |
2310 | st.wDay = 1; | |
2311 | st.wHour = 0; | |
2312 | st.wMinute = 0; | |
2313 | st.wSecond = 0; | |
2314 | st.wMilliseconds = 0; | |
2315 | ||
2316 | SystemTimeToFileTime (&st, &utc_base_ft); | |
2317 | utc_base = (long double) utc_base_ft.dwHighDateTime | |
69b72317 | 2318 | * 4096.0L * 1024.0L * 1024.0L + utc_base_ft.dwLowDateTime; |
480b0c5b GV |
2319 | init = 1; |
2320 | } | |
2321 | ||
2322 | if (CompareFileTime (&ft, &utc_base_ft) < 0) | |
2323 | return 0; | |
2324 | ||
69b72317 EZ |
2325 | ret = (long double) ft.dwHighDateTime |
2326 | * 4096.0L * 1024.0L * 1024.0L + ft.dwLowDateTime; | |
480b0c5b | 2327 | ret -= utc_base; |
69b72317 | 2328 | return (time_t) (ret * 1e-7L); |
480b0c5b GV |
2329 | } |
2330 | ||
480b0c5b GV |
2331 | void |
2332 | convert_from_time_t (time_t time, FILETIME * pft) | |
2333 | { | |
2334 | long double tmp; | |
2335 | ||
2336 | if (!init) | |
2337 | { | |
2338 | /* Determine the delta between 1-Jan-1601 and 1-Jan-1970. */ | |
2339 | SYSTEMTIME st; | |
2340 | ||
2341 | st.wYear = 1970; | |
2342 | st.wMonth = 1; | |
2343 | st.wDay = 1; | |
2344 | st.wHour = 0; | |
2345 | st.wMinute = 0; | |
2346 | st.wSecond = 0; | |
2347 | st.wMilliseconds = 0; | |
2348 | ||
2349 | SystemTimeToFileTime (&st, &utc_base_ft); | |
2350 | utc_base = (long double) utc_base_ft.dwHighDateTime | |
2351 | * 4096 * 1024 * 1024 + utc_base_ft.dwLowDateTime; | |
2352 | init = 1; | |
2353 | } | |
2354 | ||
2355 | /* time in 100ns units since 1-Jan-1601 */ | |
2356 | tmp = (long double) time * 1e7 + utc_base; | |
2357 | pft->dwHighDateTime = (DWORD) (tmp / (4096.0 * 1024 * 1024)); | |
16bb7578 | 2358 | pft->dwLowDateTime = (DWORD) (tmp - (4096.0 * 1024 * 1024) * pft->dwHighDateTime); |
480b0c5b | 2359 | } |
480b0c5b | 2360 | |
76b3903d GV |
2361 | #if 0 |
2362 | /* No reason to keep this; faking inode values either by hashing or even | |
2363 | using the file index from GetInformationByHandle, is not perfect and | |
2364 | so by default Emacs doesn't use the inode values on Windows. | |
2365 | Instead, we now determine file-truename correctly (except for | |
2366 | possible drive aliasing etc). */ | |
2367 | ||
2368 | /* Modified version of "PJW" algorithm (see the "Dragon" compiler book). */ | |
480b0c5b | 2369 | static unsigned |
76b3903d | 2370 | hashval (const unsigned char * str) |
480b0c5b GV |
2371 | { |
2372 | unsigned h = 0; | |
480b0c5b GV |
2373 | while (*str) |
2374 | { | |
2375 | h = (h << 4) + *str++; | |
76b3903d | 2376 | h ^= (h >> 28); |
480b0c5b GV |
2377 | } |
2378 | return h; | |
2379 | } | |
2380 | ||
2381 | /* Return the hash value of the canonical pathname, excluding the | |
2382 | drive/UNC header, to get a hopefully unique inode number. */ | |
76b3903d | 2383 | static DWORD |
480b0c5b GV |
2384 | generate_inode_val (const char * name) |
2385 | { | |
2386 | char fullname[ MAX_PATH ]; | |
2387 | char * p; | |
2388 | unsigned hash; | |
2389 | ||
76b3903d GV |
2390 | /* Get the truly canonical filename, if it exists. (Note: this |
2391 | doesn't resolve aliasing due to subst commands, or recognise hard | |
2392 | links. */ | |
2393 | if (!w32_get_long_filename ((char *)name, fullname, MAX_PATH)) | |
2394 | abort (); | |
2395 | ||
2396 | parse_root (fullname, &p); | |
fbd6baed | 2397 | /* Normal W32 filesystems are still case insensitive. */ |
480b0c5b | 2398 | _strlwr (p); |
76b3903d | 2399 | return hashval (p); |
480b0c5b GV |
2400 | } |
2401 | ||
76b3903d GV |
2402 | #endif |
2403 | ||
480b0c5b GV |
2404 | /* MSVC stat function can't cope with UNC names and has other bugs, so |
2405 | replace it with our own. This also allows us to calculate consistent | |
2406 | inode values without hacks in the main Emacs code. */ | |
2407 | int | |
2408 | stat (const char * path, struct stat * buf) | |
2409 | { | |
eb9ea53f | 2410 | char *name, *r; |
480b0c5b GV |
2411 | WIN32_FIND_DATA wfd; |
2412 | HANDLE fh; | |
76b3903d | 2413 | DWORD fake_inode; |
480b0c5b GV |
2414 | int permission; |
2415 | int len; | |
2416 | int rootdir = FALSE; | |
2417 | ||
2418 | if (path == NULL || buf == NULL) | |
2419 | { | |
2420 | errno = EFAULT; | |
2421 | return -1; | |
2422 | } | |
2423 | ||
fbd6baed | 2424 | name = (char *) map_w32_filename (path, &path); |
22189f79 EZ |
2425 | /* Must be valid filename, no wild cards or other invalid |
2426 | characters. We use _mbspbrk to support multibyte strings that | |
2427 | might look to strpbrk as if they included literal *, ?, and other | |
2428 | characters mentioned below that are disallowed by Windows | |
2429 | filesystems. */ | |
2430 | if (_mbspbrk (name, "*?|<>\"")) | |
480b0c5b GV |
2431 | { |
2432 | errno = ENOENT; | |
2433 | return -1; | |
2434 | } | |
2435 | ||
eb9ea53f GV |
2436 | /* If name is "c:/.." or "/.." then stat "c:/" or "/". */ |
2437 | r = IS_DEVICE_SEP (name[1]) ? &name[2] : name; | |
2438 | if (IS_DIRECTORY_SEP (r[0]) && r[1] == '.' && r[2] == '.' && r[3] == '\0') | |
2439 | { | |
2440 | r[1] = r[2] = '\0'; | |
2441 | } | |
2442 | ||
480b0c5b GV |
2443 | /* Remove trailing directory separator, unless name is the root |
2444 | directory of a drive or UNC volume in which case ensure there | |
2445 | is a trailing separator. */ | |
2446 | len = strlen (name); | |
2447 | rootdir = (path >= name + len - 1 | |
2448 | && (IS_DIRECTORY_SEP (*path) || *path == 0)); | |
2449 | name = strcpy (alloca (len + 2), name); | |
2450 | ||
9d3355d1 GV |
2451 | if (is_unc_volume (name)) |
2452 | { | |
2453 | DWORD attrs = unc_volume_file_attributes (name); | |
2454 | ||
2455 | if (attrs == -1) | |
2456 | return -1; | |
2457 | ||
2458 | memset (&wfd, 0, sizeof (wfd)); | |
2459 | wfd.dwFileAttributes = attrs; | |
2460 | wfd.ftCreationTime = utc_base_ft; | |
2461 | wfd.ftLastAccessTime = utc_base_ft; | |
2462 | wfd.ftLastWriteTime = utc_base_ft; | |
2463 | strcpy (wfd.cFileName, name); | |
2464 | } | |
2465 | else if (rootdir) | |
480b0c5b GV |
2466 | { |
2467 | if (!IS_DIRECTORY_SEP (name[len-1])) | |
2468 | strcat (name, "\\"); | |
2469 | if (GetDriveType (name) < 2) | |
2470 | { | |
2471 | errno = ENOENT; | |
2472 | return -1; | |
2473 | } | |
2474 | memset (&wfd, 0, sizeof (wfd)); | |
2475 | wfd.dwFileAttributes = FILE_ATTRIBUTE_DIRECTORY; | |
2476 | wfd.ftCreationTime = utc_base_ft; | |
2477 | wfd.ftLastAccessTime = utc_base_ft; | |
2478 | wfd.ftLastWriteTime = utc_base_ft; | |
2479 | strcpy (wfd.cFileName, name); | |
2480 | } | |
2481 | else | |
2482 | { | |
2483 | if (IS_DIRECTORY_SEP (name[len-1])) | |
2484 | name[len - 1] = 0; | |
76b3903d GV |
2485 | |
2486 | /* (This is hacky, but helps when doing file completions on | |
2487 | network drives.) Optimize by using information available from | |
2488 | active readdir if possible. */ | |
b19cc00c GV |
2489 | len = strlen (dir_pathname); |
2490 | if (IS_DIRECTORY_SEP (dir_pathname[len-1])) | |
2491 | len--; | |
76b3903d | 2492 | if (dir_find_handle != INVALID_HANDLE_VALUE |
b19cc00c | 2493 | && strnicmp (name, dir_pathname, len) == 0 |
76b3903d GV |
2494 | && IS_DIRECTORY_SEP (name[len]) |
2495 | && stricmp (name + len + 1, dir_static.d_name) == 0) | |
480b0c5b | 2496 | { |
76b3903d GV |
2497 | /* This was the last entry returned by readdir. */ |
2498 | wfd = dir_find_data; | |
2499 | } | |
2500 | else | |
2501 | { | |
2502 | fh = FindFirstFile (name, &wfd); | |
2503 | if (fh == INVALID_HANDLE_VALUE) | |
2504 | { | |
2505 | errno = ENOENT; | |
2506 | return -1; | |
2507 | } | |
2508 | FindClose (fh); | |
480b0c5b | 2509 | } |
480b0c5b GV |
2510 | } |
2511 | ||
93e0f0da JR |
2512 | if (!NILP (Vw32_get_true_file_attributes) |
2513 | /* No access rights required to get info. */ | |
2514 | && (fh = CreateFile (name, 0, 0, NULL, OPEN_EXISTING, | |
2515 | FILE_FLAG_BACKUP_SEMANTICS, NULL)) | |
2516 | != INVALID_HANDLE_VALUE) | |
480b0c5b | 2517 | { |
480b0c5b | 2518 | /* This is more accurate in terms of gettting the correct number |
aa5ee2a3 | 2519 | of links, but is quite slow (it is noticeable when Emacs is |
480b0c5b GV |
2520 | making a list of file name completions). */ |
2521 | BY_HANDLE_FILE_INFORMATION info; | |
2522 | ||
480b0c5b GV |
2523 | if (GetFileInformationByHandle (fh, &info)) |
2524 | { | |
480b0c5b | 2525 | buf->st_nlink = info.nNumberOfLinks; |
76b3903d GV |
2526 | /* Might as well use file index to fake inode values, but this |
2527 | is not guaranteed to be unique unless we keep a handle open | |
2528 | all the time (even then there are situations where it is | |
2529 | not unique). Reputedly, there are at most 48 bits of info | |
2530 | (on NTFS, presumably less on FAT). */ | |
2531 | fake_inode = info.nFileIndexLow ^ info.nFileIndexHigh; | |
480b0c5b GV |
2532 | } |
2533 | else | |
2534 | { | |
01f31dfb AI |
2535 | buf->st_nlink = 1; |
2536 | fake_inode = 0; | |
2537 | } | |
2538 | ||
93e0f0da | 2539 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) |
01f31dfb | 2540 | { |
93e0f0da JR |
2541 | buf->st_mode = _S_IFDIR; |
2542 | } | |
2543 | else | |
2544 | { | |
2545 | switch (GetFileType (fh)) | |
2546 | { | |
2547 | case FILE_TYPE_DISK: | |
2548 | buf->st_mode = _S_IFREG; | |
2549 | break; | |
2550 | case FILE_TYPE_PIPE: | |
2551 | buf->st_mode = _S_IFIFO; | |
2552 | break; | |
2553 | case FILE_TYPE_CHAR: | |
2554 | case FILE_TYPE_UNKNOWN: | |
2555 | default: | |
2556 | buf->st_mode = _S_IFCHR; | |
2557 | } | |
480b0c5b | 2558 | } |
01f31dfb | 2559 | CloseHandle (fh); |
76b3903d GV |
2560 | } |
2561 | else | |
2562 | { | |
2563 | /* Don't bother to make this information more accurate. */ | |
93e0f0da | 2564 | buf->st_mode = (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) ? |
bc5fdfc7 | 2565 | _S_IFDIR : _S_IFREG; |
480b0c5b | 2566 | buf->st_nlink = 1; |
76b3903d GV |
2567 | fake_inode = 0; |
2568 | } | |
2569 | ||
2570 | #if 0 | |
2571 | /* Not sure if there is any point in this. */ | |
2572 | if (!NILP (Vw32_generate_fake_inodes)) | |
2573 | fake_inode = generate_inode_val (name); | |
2574 | else if (fake_inode == 0) | |
2575 | { | |
2576 | /* For want of something better, try to make everything unique. */ | |
2577 | static DWORD gen_num = 0; | |
2578 | fake_inode = ++gen_num; | |
480b0c5b | 2579 | } |
76b3903d GV |
2580 | #endif |
2581 | ||
2582 | /* MSVC defines _ino_t to be short; other libc's might not. */ | |
2583 | if (sizeof (buf->st_ino) == 2) | |
2584 | buf->st_ino = fake_inode ^ (fake_inode >> 16); | |
2585 | else | |
2586 | buf->st_ino = fake_inode; | |
480b0c5b GV |
2587 | |
2588 | /* consider files to belong to current user */ | |
2589 | buf->st_uid = the_passwd.pw_uid; | |
2590 | buf->st_gid = the_passwd.pw_gid; | |
2591 | ||
fbd6baed | 2592 | /* volume_info is set indirectly by map_w32_filename */ |
480b0c5b GV |
2593 | buf->st_dev = volume_info.serialnum; |
2594 | buf->st_rdev = volume_info.serialnum; | |
2595 | ||
480b0c5b GV |
2596 | |
2597 | buf->st_size = wfd.nFileSizeLow; | |
2598 | ||
2599 | /* Convert timestamps to Unix format. */ | |
2600 | buf->st_mtime = convert_time (wfd.ftLastWriteTime); | |
2601 | buf->st_atime = convert_time (wfd.ftLastAccessTime); | |
2602 | if (buf->st_atime == 0) buf->st_atime = buf->st_mtime; | |
2603 | buf->st_ctime = convert_time (wfd.ftCreationTime); | |
2604 | if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime; | |
2605 | ||
2606 | /* determine rwx permissions */ | |
2607 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_READONLY) | |
2608 | permission = _S_IREAD; | |
2609 | else | |
2610 | permission = _S_IREAD | _S_IWRITE; | |
177c0ea7 | 2611 | |
480b0c5b GV |
2612 | if (wfd.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) |
2613 | permission |= _S_IEXEC; | |
b3308d2e KH |
2614 | else if (is_exec (name)) |
2615 | permission |= _S_IEXEC; | |
480b0c5b GV |
2616 | |
2617 | buf->st_mode |= permission | (permission >> 3) | (permission >> 6); | |
2618 | ||
2619 | return 0; | |
2620 | } | |
2621 | ||
16bb7578 GV |
2622 | /* Provide fstat and utime as well as stat for consistent handling of |
2623 | file timestamps. */ | |
2624 | int | |
2625 | fstat (int desc, struct stat * buf) | |
2626 | { | |
2627 | HANDLE fh = (HANDLE) _get_osfhandle (desc); | |
2628 | BY_HANDLE_FILE_INFORMATION info; | |
2629 | DWORD fake_inode; | |
2630 | int permission; | |
2631 | ||
2632 | switch (GetFileType (fh) & ~FILE_TYPE_REMOTE) | |
2633 | { | |
2634 | case FILE_TYPE_DISK: | |
2635 | buf->st_mode = _S_IFREG; | |
2636 | if (!GetFileInformationByHandle (fh, &info)) | |
2637 | { | |
2638 | errno = EACCES; | |
2639 | return -1; | |
2640 | } | |
2641 | break; | |
2642 | case FILE_TYPE_PIPE: | |
2643 | buf->st_mode = _S_IFIFO; | |
2644 | goto non_disk; | |
2645 | case FILE_TYPE_CHAR: | |
2646 | case FILE_TYPE_UNKNOWN: | |
2647 | default: | |
2648 | buf->st_mode = _S_IFCHR; | |
2649 | non_disk: | |
2650 | memset (&info, 0, sizeof (info)); | |
2651 | info.dwFileAttributes = 0; | |
2652 | info.ftCreationTime = utc_base_ft; | |
2653 | info.ftLastAccessTime = utc_base_ft; | |
2654 | info.ftLastWriteTime = utc_base_ft; | |
2655 | } | |
2656 | ||
2657 | if (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) | |
16bb7578 | 2658 | buf->st_mode = _S_IFDIR; |
93e0f0da JR |
2659 | |
2660 | buf->st_nlink = info.nNumberOfLinks; | |
2661 | /* Might as well use file index to fake inode values, but this | |
2662 | is not guaranteed to be unique unless we keep a handle open | |
2663 | all the time (even then there are situations where it is | |
2664 | not unique). Reputedly, there are at most 48 bits of info | |
2665 | (on NTFS, presumably less on FAT). */ | |
2666 | fake_inode = info.nFileIndexLow ^ info.nFileIndexHigh; | |
16bb7578 GV |
2667 | |
2668 | /* MSVC defines _ino_t to be short; other libc's might not. */ | |
2669 | if (sizeof (buf->st_ino) == 2) | |
2670 | buf->st_ino = fake_inode ^ (fake_inode >> 16); | |
2671 | else | |
2672 | buf->st_ino = fake_inode; | |
2673 | ||
2674 | /* consider files to belong to current user */ | |
2675 | buf->st_uid = 0; | |
2676 | buf->st_gid = 0; | |
2677 | ||
2678 | buf->st_dev = info.dwVolumeSerialNumber; | |
2679 | buf->st_rdev = info.dwVolumeSerialNumber; | |
2680 | ||
2681 | buf->st_size = info.nFileSizeLow; | |
2682 | ||
2683 | /* Convert timestamps to Unix format. */ | |
2684 | buf->st_mtime = convert_time (info.ftLastWriteTime); | |
2685 | buf->st_atime = convert_time (info.ftLastAccessTime); | |
2686 | if (buf->st_atime == 0) buf->st_atime = buf->st_mtime; | |
2687 | buf->st_ctime = convert_time (info.ftCreationTime); | |
2688 | if (buf->st_ctime == 0) buf->st_ctime = buf->st_mtime; | |
2689 | ||
2690 | /* determine rwx permissions */ | |
2691 | if (info.dwFileAttributes & FILE_ATTRIBUTE_READONLY) | |
2692 | permission = _S_IREAD; | |
2693 | else | |
2694 | permission = _S_IREAD | _S_IWRITE; | |
177c0ea7 | 2695 | |
16bb7578 GV |
2696 | if (info.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) |
2697 | permission |= _S_IEXEC; | |
2698 | else | |
2699 | { | |
2700 | #if 0 /* no way of knowing the filename */ | |
2701 | char * p = strrchr (name, '.'); | |
2702 | if (p != NULL && | |
2703 | (stricmp (p, ".exe") == 0 || | |
2704 | stricmp (p, ".com") == 0 || | |
2705 | stricmp (p, ".bat") == 0 || | |
2706 | stricmp (p, ".cmd") == 0)) | |
2707 | permission |= _S_IEXEC; | |
2708 | #endif | |
2709 | } | |
2710 | ||
2711 | buf->st_mode |= permission | (permission >> 3) | (permission >> 6); | |
2712 | ||
2713 | return 0; | |
2714 | } | |
2715 | ||
2716 | int | |
2717 | utime (const char *name, struct utimbuf *times) | |
2718 | { | |
2719 | struct utimbuf deftime; | |
2720 | HANDLE fh; | |
2721 | FILETIME mtime; | |
2722 | FILETIME atime; | |
2723 | ||
2724 | if (times == NULL) | |
2725 | { | |
2726 | deftime.modtime = deftime.actime = time (NULL); | |
2727 | times = &deftime; | |
2728 | } | |
2729 | ||
2730 | /* Need write access to set times. */ | |
2731 | fh = CreateFile (name, GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, | |
2732 | 0, OPEN_EXISTING, 0, NULL); | |
2733 | if (fh) | |
2734 | { | |
2735 | convert_from_time_t (times->actime, &atime); | |
2736 | convert_from_time_t (times->modtime, &mtime); | |
2737 | if (!SetFileTime (fh, NULL, &atime, &mtime)) | |
2738 | { | |
2739 | CloseHandle (fh); | |
2740 | errno = EACCES; | |
2741 | return -1; | |
2742 | } | |
2743 | CloseHandle (fh); | |
2744 | } | |
2745 | else | |
2746 | { | |
2747 | errno = EINVAL; | |
2748 | return -1; | |
2749 | } | |
2750 | return 0; | |
2751 | } | |
2752 | ||
480b0c5b GV |
2753 | #ifdef HAVE_SOCKETS |
2754 | ||
2755 | /* Wrappers for winsock functions to map between our file descriptors | |
2756 | and winsock's handles; also set h_errno for convenience. | |
2757 | ||
2758 | To allow Emacs to run on systems which don't have winsock support | |
2759 | installed, we dynamically link to winsock on startup if present, and | |
2760 | otherwise provide the minimum necessary functionality | |
2761 | (eg. gethostname). */ | |
2762 | ||
2763 | /* function pointers for relevant socket functions */ | |
2764 | int (PASCAL *pfn_WSAStartup) (WORD wVersionRequired, LPWSADATA lpWSAData); | |
2765 | void (PASCAL *pfn_WSASetLastError) (int iError); | |
2766 | int (PASCAL *pfn_WSAGetLastError) (void); | |
26fb7bc4 | 2767 | int (PASCAL *pfn_WSAEventSelect) (SOCKET s, HANDLE hEventObject, long lNetworkEvents); |
64570b36 KS |
2768 | HANDLE (PASCAL *pfn_WSACreateEvent) (void); |
2769 | int (PASCAL *pfn_WSACloseEvent) (HANDLE hEvent); | |
480b0c5b GV |
2770 | int (PASCAL *pfn_socket) (int af, int type, int protocol); |
2771 | int (PASCAL *pfn_bind) (SOCKET s, const struct sockaddr *addr, int namelen); | |
2772 | int (PASCAL *pfn_connect) (SOCKET s, const struct sockaddr *addr, int namelen); | |
2773 | int (PASCAL *pfn_ioctlsocket) (SOCKET s, long cmd, u_long *argp); | |
2774 | int (PASCAL *pfn_recv) (SOCKET s, char * buf, int len, int flags); | |
2775 | int (PASCAL *pfn_send) (SOCKET s, const char * buf, int len, int flags); | |
2776 | int (PASCAL *pfn_closesocket) (SOCKET s); | |
2777 | int (PASCAL *pfn_shutdown) (SOCKET s, int how); | |
2778 | int (PASCAL *pfn_WSACleanup) (void); | |
2779 | ||
2780 | u_short (PASCAL *pfn_htons) (u_short hostshort); | |
2781 | u_short (PASCAL *pfn_ntohs) (u_short netshort); | |
2782 | unsigned long (PASCAL *pfn_inet_addr) (const char * cp); | |
2783 | int (PASCAL *pfn_gethostname) (char * name, int namelen); | |
2784 | struct hostent * (PASCAL *pfn_gethostbyname) (const char * name); | |
2785 | struct servent * (PASCAL *pfn_getservbyname) (const char * name, const char * proto); | |
ecd270eb | 2786 | int (PASCAL *pfn_getpeername) (SOCKET s, struct sockaddr *addr, int * namelen); |
962955c5 JR |
2787 | int (PASCAL *pfn_setsockopt) (SOCKET s, int level, int optname, |
2788 | const char * optval, int optlen); | |
2789 | int (PASCAL *pfn_listen) (SOCKET s, int backlog); | |
2790 | int (PASCAL *pfn_getsockname) (SOCKET s, struct sockaddr * name, | |
2791 | int * namelen); | |
2792 | SOCKET (PASCAL *pfn_accept) (SOCKET s, struct sockaddr * addr, int * addrlen); | |
2793 | int (PASCAL *pfn_recvfrom) (SOCKET s, char * buf, int len, int flags, | |
2794 | struct sockaddr * from, int * fromlen); | |
2795 | int (PASCAL *pfn_sendto) (SOCKET s, const char * buf, int len, int flags, | |
2796 | const struct sockaddr * to, int tolen); | |
2797 | ||
f1614061 RS |
2798 | /* SetHandleInformation is only needed to make sockets non-inheritable. */ |
2799 | BOOL (WINAPI *pfn_SetHandleInformation) (HANDLE object, DWORD mask, DWORD flags); | |
2800 | #ifndef HANDLE_FLAG_INHERIT | |
2801 | #define HANDLE_FLAG_INHERIT 1 | |
2802 | #endif | |
480b0c5b | 2803 | |
f249a012 RS |
2804 | HANDLE winsock_lib; |
2805 | static int winsock_inuse; | |
480b0c5b | 2806 | |
f249a012 | 2807 | BOOL |
480b0c5b GV |
2808 | term_winsock (void) |
2809 | { | |
f249a012 | 2810 | if (winsock_lib != NULL && winsock_inuse == 0) |
480b0c5b | 2811 | { |
f249a012 RS |
2812 | /* Not sure what would cause WSAENETDOWN, or even if it can happen |
2813 | after WSAStartup returns successfully, but it seems reasonable | |
2814 | to allow unloading winsock anyway in that case. */ | |
2815 | if (pfn_WSACleanup () == 0 || | |
2816 | pfn_WSAGetLastError () == WSAENETDOWN) | |
2817 | { | |
2818 | if (FreeLibrary (winsock_lib)) | |
2819 | winsock_lib = NULL; | |
2820 | return TRUE; | |
2821 | } | |
480b0c5b | 2822 | } |
f249a012 | 2823 | return FALSE; |
480b0c5b GV |
2824 | } |
2825 | ||
f249a012 RS |
2826 | BOOL |
2827 | init_winsock (int load_now) | |
480b0c5b GV |
2828 | { |
2829 | WSADATA winsockData; | |
2830 | ||
f249a012 RS |
2831 | if (winsock_lib != NULL) |
2832 | return TRUE; | |
f1614061 RS |
2833 | |
2834 | pfn_SetHandleInformation = NULL; | |
2835 | pfn_SetHandleInformation | |
2836 | = (void *) GetProcAddress (GetModuleHandle ("kernel32.dll"), | |
2837 | "SetHandleInformation"); | |
2838 | ||
64570b36 | 2839 | winsock_lib = LoadLibrary ("Ws2_32.dll"); |
480b0c5b GV |
2840 | |
2841 | if (winsock_lib != NULL) | |
2842 | { | |
2843 | /* dynamically link to socket functions */ | |
2844 | ||
2845 | #define LOAD_PROC(fn) \ | |
2846 | if ((pfn_##fn = (void *) GetProcAddress (winsock_lib, #fn)) == NULL) \ | |
2847 | goto fail; | |
2848 | ||
2849 | LOAD_PROC( WSAStartup ); | |
2850 | LOAD_PROC( WSASetLastError ); | |
2851 | LOAD_PROC( WSAGetLastError ); | |
26fb7bc4 | 2852 | LOAD_PROC( WSAEventSelect ); |
64570b36 KS |
2853 | LOAD_PROC( WSACreateEvent ); |
2854 | LOAD_PROC( WSACloseEvent ); | |
480b0c5b GV |
2855 | LOAD_PROC( socket ); |
2856 | LOAD_PROC( bind ); | |
2857 | LOAD_PROC( connect ); | |
2858 | LOAD_PROC( ioctlsocket ); | |
2859 | LOAD_PROC( recv ); | |
2860 | LOAD_PROC( send ); | |
2861 | LOAD_PROC( closesocket ); | |
2862 | LOAD_PROC( shutdown ); | |
2863 | LOAD_PROC( htons ); | |
2864 | LOAD_PROC( ntohs ); | |
2865 | LOAD_PROC( inet_addr ); | |
2866 | LOAD_PROC( gethostname ); | |
2867 | LOAD_PROC( gethostbyname ); | |
2868 | LOAD_PROC( getservbyname ); | |
ecd270eb | 2869 | LOAD_PROC( getpeername ); |
480b0c5b | 2870 | LOAD_PROC( WSACleanup ); |
962955c5 JR |
2871 | LOAD_PROC( setsockopt ); |
2872 | LOAD_PROC( listen ); | |
2873 | LOAD_PROC( getsockname ); | |
2874 | LOAD_PROC( accept ); | |
2875 | LOAD_PROC( recvfrom ); | |
2876 | LOAD_PROC( sendto ); | |
f249a012 RS |
2877 | #undef LOAD_PROC |
2878 | ||
480b0c5b GV |
2879 | /* specify version 1.1 of winsock */ |
2880 | if (pfn_WSAStartup (0x101, &winsockData) == 0) | |
2881 | { | |
f249a012 RS |
2882 | if (winsockData.wVersion != 0x101) |
2883 | goto fail; | |
2884 | ||
2885 | if (!load_now) | |
2886 | { | |
2887 | /* Report that winsock exists and is usable, but leave | |
2888 | socket functions disabled. I am assuming that calling | |
2889 | WSAStartup does not require any network interaction, | |
2890 | and in particular does not cause or require a dial-up | |
2891 | connection to be established. */ | |
2892 | ||
2893 | pfn_WSACleanup (); | |
2894 | FreeLibrary (winsock_lib); | |
2895 | winsock_lib = NULL; | |
2896 | } | |
2897 | winsock_inuse = 0; | |
2898 | return TRUE; | |
480b0c5b GV |
2899 | } |
2900 | ||
2901 | fail: | |
2902 | FreeLibrary (winsock_lib); | |
f249a012 | 2903 | winsock_lib = NULL; |
480b0c5b | 2904 | } |
f249a012 RS |
2905 | |
2906 | return FALSE; | |
480b0c5b GV |
2907 | } |
2908 | ||
2909 | ||
2910 | int h_errno = 0; | |
2911 | ||
2912 | /* function to set h_errno for compatability; map winsock error codes to | |
2913 | normal system codes where they overlap (non-overlapping definitions | |
2914 | are already in <sys/socket.h> */ | |
9bfb11f9 KS |
2915 | static void |
2916 | set_errno () | |
480b0c5b | 2917 | { |
f249a012 | 2918 | if (winsock_lib == NULL) |
480b0c5b GV |
2919 | h_errno = EINVAL; |
2920 | else | |
2921 | h_errno = pfn_WSAGetLastError (); | |
2922 | ||
2923 | switch (h_errno) | |
2924 | { | |
2925 | case WSAEACCES: h_errno = EACCES; break; | |
2926 | case WSAEBADF: h_errno = EBADF; break; | |
2927 | case WSAEFAULT: h_errno = EFAULT; break; | |
2928 | case WSAEINTR: h_errno = EINTR; break; | |
2929 | case WSAEINVAL: h_errno = EINVAL; break; | |
2930 | case WSAEMFILE: h_errno = EMFILE; break; | |
2931 | case WSAENAMETOOLONG: h_errno = ENAMETOOLONG; break; | |
2932 | case WSAENOTEMPTY: h_errno = ENOTEMPTY; break; | |
2933 | } | |
2934 | errno = h_errno; | |
2935 | } | |
2936 | ||
9bfb11f9 KS |
2937 | static void |
2938 | check_errno () | |
480b0c5b | 2939 | { |
f249a012 | 2940 | if (h_errno == 0 && winsock_lib != NULL) |
480b0c5b GV |
2941 | pfn_WSASetLastError (0); |
2942 | } | |
2943 | ||
d8fcc1b9 AI |
2944 | /* Extend strerror to handle the winsock-specific error codes. */ |
2945 | struct { | |
2946 | int errnum; | |
2947 | char * msg; | |
2948 | } _wsa_errlist[] = { | |
2949 | WSAEINTR , "Interrupted function call", | |
2950 | WSAEBADF , "Bad file descriptor", | |
2951 | WSAEACCES , "Permission denied", | |
2952 | WSAEFAULT , "Bad address", | |
2953 | WSAEINVAL , "Invalid argument", | |
2954 | WSAEMFILE , "Too many open files", | |
177c0ea7 | 2955 | |
d8fcc1b9 AI |
2956 | WSAEWOULDBLOCK , "Resource temporarily unavailable", |
2957 | WSAEINPROGRESS , "Operation now in progress", | |
2958 | WSAEALREADY , "Operation already in progress", | |
2959 | WSAENOTSOCK , "Socket operation on non-socket", | |
2960 | WSAEDESTADDRREQ , "Destination address required", | |
2961 | WSAEMSGSIZE , "Message too long", | |
2962 | WSAEPROTOTYPE , "Protocol wrong type for socket", | |
2963 | WSAENOPROTOOPT , "Bad protocol option", | |
2964 | WSAEPROTONOSUPPORT , "Protocol not supported", | |
2965 | WSAESOCKTNOSUPPORT , "Socket type not supported", | |
2966 | WSAEOPNOTSUPP , "Operation not supported", | |
2967 | WSAEPFNOSUPPORT , "Protocol family not supported", | |
2968 | WSAEAFNOSUPPORT , "Address family not supported by protocol family", | |
2969 | WSAEADDRINUSE , "Address already in use", | |
2970 | WSAEADDRNOTAVAIL , "Cannot assign requested address", | |
2971 | WSAENETDOWN , "Network is down", | |
2972 | WSAENETUNREACH , "Network is unreachable", | |
2973 | WSAENETRESET , "Network dropped connection on reset", | |
2974 | WSAECONNABORTED , "Software caused connection abort", | |
2975 | WSAECONNRESET , "Connection reset by peer", | |
2976 | WSAENOBUFS , "No buffer space available", | |
2977 | WSAEISCONN , "Socket is already connected", | |
2978 | WSAENOTCONN , "Socket is not connected", | |
2979 | WSAESHUTDOWN , "Cannot send after socket shutdown", | |
2980 | WSAETOOMANYREFS , "Too many references", /* not sure */ | |
2981 | WSAETIMEDOUT , "Connection timed out", | |
2982 | WSAECONNREFUSED , "Connection refused", | |
2983 | WSAELOOP , "Network loop", /* not sure */ | |
2984 | WSAENAMETOOLONG , "Name is too long", | |
2985 | WSAEHOSTDOWN , "Host is down", | |
2986 | WSAEHOSTUNREACH , "No route to host", | |
2987 | WSAENOTEMPTY , "Buffer not empty", /* not sure */ | |
2988 | WSAEPROCLIM , "Too many processes", | |
2989 | WSAEUSERS , "Too many users", /* not sure */ | |
2990 | WSAEDQUOT , "Double quote in host name", /* really not sure */ | |
2991 | WSAESTALE , "Data is stale", /* not sure */ | |
2992 | WSAEREMOTE , "Remote error", /* not sure */ | |
177c0ea7 | 2993 | |
d8fcc1b9 AI |
2994 | WSASYSNOTREADY , "Network subsystem is unavailable", |
2995 | WSAVERNOTSUPPORTED , "WINSOCK.DLL version out of range", | |
2996 | WSANOTINITIALISED , "Winsock not initialized successfully", | |
2997 | WSAEDISCON , "Graceful shutdown in progress", | |
2998 | #ifdef WSAENOMORE | |
2999 | WSAENOMORE , "No more operations allowed", /* not sure */ | |
3000 | WSAECANCELLED , "Operation cancelled", /* not sure */ | |
3001 | WSAEINVALIDPROCTABLE , "Invalid procedure table from service provider", | |
3002 | WSAEINVALIDPROVIDER , "Invalid service provider version number", | |
3003 | WSAEPROVIDERFAILEDINIT , "Unable to initialize a service provider", | |
aa5ee2a3 | 3004 | WSASYSCALLFAILURE , "System call failure", |
d8fcc1b9 AI |
3005 | WSASERVICE_NOT_FOUND , "Service not found", /* not sure */ |
3006 | WSATYPE_NOT_FOUND , "Class type not found", | |
3007 | WSA_E_NO_MORE , "No more resources available", /* really not sure */ | |
3008 | WSA_E_CANCELLED , "Operation already cancelled", /* really not sure */ | |
3009 | WSAEREFUSED , "Operation refused", /* not sure */ | |
3010 | #endif | |
177c0ea7 | 3011 | |
d8fcc1b9 AI |
3012 | WSAHOST_NOT_FOUND , "Host not found", |
3013 | WSATRY_AGAIN , "Authoritative host not found during name lookup", | |
3014 | WSANO_RECOVERY , "Non-recoverable error during name lookup", | |
3015 | WSANO_DATA , "Valid name, no data record of requested type", | |
3016 | ||
3017 | -1, NULL | |
3018 | }; | |
3019 | ||
3020 | char * | |
3021 | sys_strerror(int error_no) | |
3022 | { | |
3023 | int i; | |
3024 | static char unknown_msg[40]; | |
3025 | ||
a302c7ae AI |
3026 | if (error_no >= 0 && error_no < sys_nerr) |
3027 | return sys_errlist[error_no]; | |
d8fcc1b9 AI |
3028 | |
3029 | for (i = 0; _wsa_errlist[i].errnum >= 0; i++) | |
3030 | if (_wsa_errlist[i].errnum == error_no) | |
3031 | return _wsa_errlist[i].msg; | |
3032 | ||
3033 | sprintf(unknown_msg, "Unidentified error: %d", error_no); | |
3034 | return unknown_msg; | |
3035 | } | |
3036 | ||
480b0c5b GV |
3037 | /* [andrewi 3-May-96] I've had conflicting results using both methods, |
3038 | but I believe the method of keeping the socket handle separate (and | |
3039 | insuring it is not inheritable) is the correct one. */ | |
3040 | ||
3041 | //#define SOCK_REPLACE_HANDLE | |
3042 | ||
3043 | #ifdef SOCK_REPLACE_HANDLE | |
3044 | #define SOCK_HANDLE(fd) ((SOCKET) _get_osfhandle (fd)) | |
3045 | #else | |
3046 | #define SOCK_HANDLE(fd) ((SOCKET) fd_info[fd].hnd) | |
3047 | #endif | |
3048 | ||
962955c5 JR |
3049 | int socket_to_fd (SOCKET s); |
3050 | ||
480b0c5b GV |
3051 | int |
3052 | sys_socket(int af, int type, int protocol) | |
3053 | { | |
962955c5 | 3054 | SOCKET s; |
480b0c5b | 3055 | |
f249a012 | 3056 | if (winsock_lib == NULL) |
480b0c5b GV |
3057 | { |
3058 | h_errno = ENETDOWN; | |
3059 | return INVALID_SOCKET; | |
3060 | } | |
3061 | ||
3062 | check_errno (); | |
3063 | ||
3064 | /* call the real socket function */ | |
962955c5 | 3065 | s = pfn_socket (af, type, protocol); |
177c0ea7 | 3066 | |
480b0c5b | 3067 | if (s != INVALID_SOCKET) |
962955c5 | 3068 | return socket_to_fd (s); |
480b0c5b | 3069 | |
962955c5 JR |
3070 | set_errno (); |
3071 | return -1; | |
3072 | } | |
3073 | ||
3074 | /* Convert a SOCKET to a file descriptor. */ | |
3075 | int | |
3076 | socket_to_fd (SOCKET s) | |
3077 | { | |
3078 | int fd; | |
3079 | child_process * cp; | |
3080 | ||
3081 | /* Although under NT 3.5 _open_osfhandle will accept a socket | |
3082 | handle, if opened with SO_OPENTYPE == SO_SYNCHRONOUS_NONALERT, | |
3083 | that does not work under NT 3.1. However, we can get the same | |
3084 | effect by using a backdoor function to replace an existing | |
3085 | descriptor handle with the one we want. */ | |
3086 | ||
3087 | /* allocate a file descriptor (with appropriate flags) */ | |
3088 | fd = _open ("NUL:", _O_RDWR); | |
3089 | if (fd >= 0) | |
3090 | { | |
480b0c5b | 3091 | #ifdef SOCK_REPLACE_HANDLE |
962955c5 JR |
3092 | /* now replace handle to NUL with our socket handle */ |
3093 | CloseHandle ((HANDLE) _get_osfhandle (fd)); | |
3094 | _free_osfhnd (fd); | |
3095 | _set_osfhnd (fd, s); | |
3096 | /* setmode (fd, _O_BINARY); */ | |
480b0c5b | 3097 | #else |
962955c5 JR |
3098 | /* Make a non-inheritable copy of the socket handle. Note |
3099 | that it is possible that sockets aren't actually kernel | |
3100 | handles, which appears to be the case on Windows 9x when | |
3101 | the MS Proxy winsock client is installed. */ | |
3102 | { | |
3103 | /* Apparently there is a bug in NT 3.51 with some service | |
3104 | packs, which prevents using DuplicateHandle to make a | |
3105 | socket handle non-inheritable (causes WSACleanup to | |
3106 | hang). The work-around is to use SetHandleInformation | |
3107 | instead if it is available and implemented. */ | |
3108 | if (pfn_SetHandleInformation) | |
480b0c5b | 3109 | { |
962955c5 JR |
3110 | pfn_SetHandleInformation ((HANDLE) s, HANDLE_FLAG_INHERIT, 0); |
3111 | } | |
3112 | else | |
3113 | { | |
3114 | HANDLE parent = GetCurrentProcess (); | |
3115 | HANDLE new_s = INVALID_HANDLE_VALUE; | |
3116 | ||
3117 | if (DuplicateHandle (parent, | |
3118 | (HANDLE) s, | |
3119 | parent, | |
3120 | &new_s, | |
3121 | 0, | |
3122 | FALSE, | |
3123 | DUPLICATE_SAME_ACCESS)) | |
f1614061 | 3124 | { |
962955c5 JR |
3125 | /* It is possible that DuplicateHandle succeeds even |
3126 | though the socket wasn't really a kernel handle, | |
3127 | because a real handle has the same value. So | |
3128 | test whether the new handle really is a socket. */ | |
3129 | long nonblocking = 0; | |
3130 | if (pfn_ioctlsocket ((SOCKET) new_s, FIONBIO, &nonblocking) == 0) | |
ca149beb | 3131 | { |
962955c5 JR |
3132 | pfn_closesocket (s); |
3133 | s = (SOCKET) new_s; | |
3134 | } | |
3135 | else | |
3136 | { | |
3137 | CloseHandle (new_s); | |
3138 | } | |
177c0ea7 | 3139 | } |
480b0c5b | 3140 | } |
962955c5 JR |
3141 | } |
3142 | fd_info[fd].hnd = (HANDLE) s; | |
480b0c5b GV |
3143 | #endif |
3144 | ||
962955c5 JR |
3145 | /* set our own internal flags */ |
3146 | fd_info[fd].flags = FILE_SOCKET | FILE_BINARY | FILE_READ | FILE_WRITE; | |
480b0c5b | 3147 | |
962955c5 JR |
3148 | cp = new_child (); |
3149 | if (cp) | |
3150 | { | |
3151 | cp->fd = fd; | |
3152 | cp->status = STATUS_READ_ACKNOWLEDGED; | |
480b0c5b | 3153 | |
962955c5 JR |
3154 | /* attach child_process to fd_info */ |
3155 | if (fd_info[ fd ].cp != NULL) | |
3156 | { | |
3157 | DebPrint (("sys_socket: fd_info[%d] apparently in use!\n", fd)); | |
3158 | abort (); | |
480b0c5b GV |
3159 | } |
3160 | ||
962955c5 JR |
3161 | fd_info[ fd ].cp = cp; |
3162 | ||
3163 | /* success! */ | |
3164 | winsock_inuse++; /* count open sockets */ | |
3165 | return fd; | |
480b0c5b | 3166 | } |
480b0c5b | 3167 | |
962955c5 JR |
3168 | /* clean up */ |
3169 | _close (fd); | |
3170 | } | |
3171 | pfn_closesocket (s); | |
3172 | h_errno = EMFILE; | |
480b0c5b GV |
3173 | return -1; |
3174 | } | |
3175 | ||
3176 | ||
3177 | int | |
3178 | sys_bind (int s, const struct sockaddr * addr, int namelen) | |
3179 | { | |
f249a012 | 3180 | if (winsock_lib == NULL) |
480b0c5b GV |
3181 | { |
3182 | h_errno = ENOTSOCK; | |
3183 | return SOCKET_ERROR; | |
3184 | } | |
3185 | ||
3186 | check_errno (); | |
3187 | if (fd_info[s].flags & FILE_SOCKET) | |
3188 | { | |
3189 | int rc = pfn_bind (SOCK_HANDLE (s), addr, namelen); | |
3190 | if (rc == SOCKET_ERROR) | |
3191 | set_errno (); | |
3192 | return rc; | |
3193 | } | |
3194 | h_errno = ENOTSOCK; | |
3195 | return SOCKET_ERROR; | |
3196 | } | |
3197 | ||
3198 | ||
3199 | int | |
3200 | sys_connect (int s, const struct sockaddr * name, int namelen) | |
3201 | { | |
f249a012 | 3202 | if (winsock_lib == NULL) |
480b0c5b GV |
3203 | { |
3204 | h_errno = ENOTSOCK; | |
3205 | return SOCKET_ERROR; | |
3206 | } | |
3207 | ||
3208 | check_errno (); | |
3209 | if (fd_info[s].flags & FILE_SOCKET) | |
3210 | { | |
3211 | int rc = pfn_connect (SOCK_HANDLE (s), name, namelen); | |
3212 | if (rc == SOCKET_ERROR) | |
3213 | set_errno (); | |
3214 | return rc; | |
3215 | } | |
3216 | h_errno = ENOTSOCK; | |
3217 | return SOCKET_ERROR; | |
3218 | } | |
3219 | ||
3220 | u_short | |
3221 | sys_htons (u_short hostshort) | |
3222 | { | |
f249a012 | 3223 | return (winsock_lib != NULL) ? |
480b0c5b GV |
3224 | pfn_htons (hostshort) : hostshort; |
3225 | } | |
3226 | ||
3227 | u_short | |
3228 | sys_ntohs (u_short netshort) | |
3229 | { | |
f249a012 | 3230 | return (winsock_lib != NULL) ? |
480b0c5b GV |
3231 | pfn_ntohs (netshort) : netshort; |
3232 | } | |
3233 | ||
3234 | unsigned long | |
3235 | sys_inet_addr (const char * cp) | |
3236 | { | |
f249a012 | 3237 | return (winsock_lib != NULL) ? |
480b0c5b GV |
3238 | pfn_inet_addr (cp) : INADDR_NONE; |
3239 | } | |
3240 | ||
3241 | int | |
3242 | sys_gethostname (char * name, int namelen) | |
3243 | { | |
f249a012 | 3244 | if (winsock_lib != NULL) |
480b0c5b GV |
3245 | return pfn_gethostname (name, namelen); |
3246 | ||
3247 | if (namelen > MAX_COMPUTERNAME_LENGTH) | |
a302c7ae | 3248 | return !GetComputerName (name, (DWORD *)&namelen); |
480b0c5b GV |
3249 | |
3250 | h_errno = EFAULT; | |
3251 | return SOCKET_ERROR; | |
3252 | } | |
3253 | ||
3254 | struct hostent * | |
3255 | sys_gethostbyname(const char * name) | |
3256 | { | |
3257 | struct hostent * host; | |
3258 | ||
f249a012 | 3259 | if (winsock_lib == NULL) |
480b0c5b GV |
3260 | { |
3261 | h_errno = ENETDOWN; | |
3262 | return NULL; | |
3263 | } | |
3264 | ||
3265 | check_errno (); | |
3266 | host = pfn_gethostbyname (name); | |
3267 | if (!host) | |
3268 | set_errno (); | |
3269 | return host; | |
3270 | } | |
3271 | ||
3272 | struct servent * | |
3273 | sys_getservbyname(const char * name, const char * proto) | |
3274 | { | |
3275 | struct servent * serv; | |
3276 | ||
f249a012 | 3277 | if (winsock_lib == NULL) |
480b0c5b GV |
3278 | { |
3279 | h_errno = ENETDOWN; | |
3280 | return NULL; | |
3281 | } | |
3282 | ||
3283 | check_errno (); | |
3284 | serv = pfn_getservbyname (name, proto); | |
3285 | if (!serv) | |
3286 | set_errno (); | |
3287 | return serv; | |
3288 | } | |
3289 | ||
ecd270eb JR |
3290 | int |
3291 | sys_getpeername (int s, struct sockaddr *addr, int * namelen) | |
3292 | { | |
3293 | if (winsock_lib == NULL) | |
3294 | { | |
3295 | h_errno = ENETDOWN; | |
3296 | return SOCKET_ERROR; | |
3297 | } | |
3298 | ||
3299 | check_errno (); | |
3300 | if (fd_info[s].flags & FILE_SOCKET) | |
3301 | { | |
3302 | int rc = pfn_getpeername (SOCK_HANDLE (s), addr, namelen); | |
3303 | if (rc == SOCKET_ERROR) | |
3304 | set_errno (); | |
3305 | return rc; | |
3306 | } | |
3307 | h_errno = ENOTSOCK; | |
3308 | return SOCKET_ERROR; | |
3309 | } | |
3310 | ||
3311 | ||
380961a6 GV |
3312 | int |
3313 | sys_shutdown (int s, int how) | |
3314 | { | |
380961a6 GV |
3315 | if (winsock_lib == NULL) |
3316 | { | |
3317 | h_errno = ENETDOWN; | |
3318 | return SOCKET_ERROR; | |
3319 | } | |
3320 | ||
3321 | check_errno (); | |
3322 | if (fd_info[s].flags & FILE_SOCKET) | |
3323 | { | |
3324 | int rc = pfn_shutdown (SOCK_HANDLE (s), how); | |
962955c5 JR |
3325 | if (rc == SOCKET_ERROR) |
3326 | set_errno (); | |
3327 | return rc; | |
3328 | } | |
3329 | h_errno = ENOTSOCK; | |
3330 | return SOCKET_ERROR; | |
3331 | } | |
3332 | ||
3333 | int | |
a5a389bb | 3334 | sys_setsockopt (int s, int level, int optname, const void * optval, int optlen) |
962955c5 JR |
3335 | { |
3336 | if (winsock_lib == NULL) | |
3337 | { | |
3338 | h_errno = ENETDOWN; | |
3339 | return SOCKET_ERROR; | |
3340 | } | |
3341 | ||
3342 | check_errno (); | |
3343 | if (fd_info[s].flags & FILE_SOCKET) | |
3344 | { | |
3345 | int rc = pfn_setsockopt (SOCK_HANDLE (s), level, optname, | |
a5a389bb | 3346 | (const char *)optval, optlen); |
962955c5 JR |
3347 | if (rc == SOCKET_ERROR) |
3348 | set_errno (); | |
3349 | return rc; | |
3350 | } | |
3351 | h_errno = ENOTSOCK; | |
177c0ea7 | 3352 | return SOCKET_ERROR; |
962955c5 JR |
3353 | } |
3354 | ||
3355 | int | |
3356 | sys_listen (int s, int backlog) | |
3357 | { | |
3358 | if (winsock_lib == NULL) | |
3359 | { | |
3360 | h_errno = ENETDOWN; | |
3361 | return SOCKET_ERROR; | |
3362 | } | |
3363 | ||
3364 | check_errno (); | |
3365 | if (fd_info[s].flags & FILE_SOCKET) | |
3366 | { | |
3367 | int rc = pfn_listen (SOCK_HANDLE (s), backlog); | |
3368 | if (rc == SOCKET_ERROR) | |
3369 | set_errno (); | |
26fb7bc4 | 3370 | else |
64570b36 | 3371 | fd_info[s].flags |= FILE_LISTEN; |
962955c5 JR |
3372 | return rc; |
3373 | } | |
3374 | h_errno = ENOTSOCK; | |
177c0ea7 | 3375 | return SOCKET_ERROR; |
962955c5 JR |
3376 | } |
3377 | ||
3378 | int | |
3379 | sys_getsockname (int s, struct sockaddr * name, int * namelen) | |
3380 | { | |
3381 | if (winsock_lib == NULL) | |
3382 | { | |
3383 | h_errno = ENETDOWN; | |
3384 | return SOCKET_ERROR; | |
3385 | } | |
3386 | ||
3387 | check_errno (); | |
3388 | if (fd_info[s].flags & FILE_SOCKET) | |
3389 | { | |
3390 | int rc = pfn_getsockname (SOCK_HANDLE (s), name, namelen); | |
3391 | if (rc == SOCKET_ERROR) | |
3392 | set_errno (); | |
3393 | return rc; | |
3394 | } | |
3395 | h_errno = ENOTSOCK; | |
177c0ea7 | 3396 | return SOCKET_ERROR; |
962955c5 JR |
3397 | } |
3398 | ||
3399 | int | |
3400 | sys_accept (int s, struct sockaddr * addr, int * addrlen) | |
3401 | { | |
3402 | if (winsock_lib == NULL) | |
3403 | { | |
3404 | h_errno = ENETDOWN; | |
3405 | return -1; | |
3406 | } | |
3407 | ||
3408 | check_errno (); | |
26fb7bc4 | 3409 | if (fd_info[s].flags & FILE_LISTEN) |
962955c5 | 3410 | { |
a0ad1860 | 3411 | SOCKET t = pfn_accept (SOCK_HANDLE (s), addr, addrlen); |
64570b36 KS |
3412 | int fd = -1; |
3413 | if (t == INVALID_SOCKET) | |
3414 | set_errno (); | |
3415 | else | |
3416 | fd = socket_to_fd (t); | |
962955c5 | 3417 | |
64570b36 KS |
3418 | fd_info[s].cp->status = STATUS_READ_ACKNOWLEDGED; |
3419 | ResetEvent (fd_info[s].cp->char_avail); | |
3420 | return fd; | |
962955c5 JR |
3421 | } |
3422 | h_errno = ENOTSOCK; | |
3423 | return -1; | |
3424 | } | |
3425 | ||
3426 | int | |
3427 | sys_recvfrom (int s, char * buf, int len, int flags, | |
3428 | struct sockaddr * from, int * fromlen) | |
3429 | { | |
3430 | if (winsock_lib == NULL) | |
3431 | { | |
3432 | h_errno = ENETDOWN; | |
3433 | return SOCKET_ERROR; | |
3434 | } | |
3435 | ||
3436 | check_errno (); | |
3437 | if (fd_info[s].flags & FILE_SOCKET) | |
3438 | { | |
3439 | int rc = pfn_recvfrom (SOCK_HANDLE (s), buf, len, flags, from, fromlen); | |
3440 | if (rc == SOCKET_ERROR) | |
3441 | set_errno (); | |
3442 | return rc; | |
3443 | } | |
3444 | h_errno = ENOTSOCK; | |
3445 | return SOCKET_ERROR; | |
3446 | } | |
3447 | ||
3448 | int | |
3449 | sys_sendto (int s, const char * buf, int len, int flags, | |
3450 | const struct sockaddr * to, int tolen) | |
3451 | { | |
3452 | if (winsock_lib == NULL) | |
3453 | { | |
3454 | h_errno = ENETDOWN; | |
3455 | return SOCKET_ERROR; | |
3456 | } | |
3457 | ||
3458 | check_errno (); | |
3459 | if (fd_info[s].flags & FILE_SOCKET) | |
3460 | { | |
3461 | int rc = pfn_sendto (SOCK_HANDLE (s), buf, len, flags, to, tolen); | |
380961a6 GV |
3462 | if (rc == SOCKET_ERROR) |
3463 | set_errno (); | |
3464 | return rc; | |
3465 | } | |
3466 | h_errno = ENOTSOCK; | |
3467 | return SOCKET_ERROR; | |
3468 | } | |
3469 | ||
ecd270eb JR |
3470 | /* Windows does not have an fcntl function. Provide an implementation |
3471 | solely for making sockets non-blocking. */ | |
3472 | int | |
3473 | fcntl (int s, int cmd, int options) | |
3474 | { | |
3475 | if (winsock_lib == NULL) | |
3476 | { | |
3477 | h_errno = ENETDOWN; | |
3478 | return -1; | |
3479 | } | |
3480 | ||
3481 | check_errno (); | |
3482 | if (fd_info[s].flags & FILE_SOCKET) | |
3483 | { | |
3484 | if (cmd == F_SETFL && options == O_NDELAY) | |
3485 | { | |
3486 | unsigned long nblock = 1; | |
3487 | int rc = pfn_ioctlsocket (SOCK_HANDLE (s), FIONBIO, &nblock); | |
3488 | if (rc == SOCKET_ERROR) | |
3489 | set_errno(); | |
3490 | /* Keep track of the fact that we set this to non-blocking. */ | |
3491 | fd_info[s].flags |= FILE_NDELAY; | |
3492 | return rc; | |
3493 | } | |
3494 | else | |
3495 | { | |
3496 | h_errno = EINVAL; | |
3497 | return SOCKET_ERROR; | |
3498 | } | |
3499 | } | |
3500 | h_errno = ENOTSOCK; | |
3501 | return SOCKET_ERROR; | |
3502 | } | |
3503 | ||
480b0c5b GV |
3504 | #endif /* HAVE_SOCKETS */ |
3505 | ||
3506 | ||
3507 | /* Shadow main io functions: we need to handle pipes and sockets more | |
3508 | intelligently, and implement non-blocking mode as well. */ | |
3509 | ||
3510 | int | |
3511 | sys_close (int fd) | |
3512 | { | |
3513 | int rc; | |
3514 | ||
7559f399 | 3515 | if (fd < 0) |
480b0c5b GV |
3516 | { |
3517 | errno = EBADF; | |
3518 | return -1; | |
3519 | } | |
3520 | ||
7559f399 | 3521 | if (fd < MAXDESC && fd_info[fd].cp) |
480b0c5b GV |
3522 | { |
3523 | child_process * cp = fd_info[fd].cp; | |
3524 | ||
3525 | fd_info[fd].cp = NULL; | |
3526 | ||
3527 | if (CHILD_ACTIVE (cp)) | |
3528 | { | |
3529 | /* if last descriptor to active child_process then cleanup */ | |
3530 | int i; | |
3531 | for (i = 0; i < MAXDESC; i++) | |
3532 | { | |
3533 | if (i == fd) | |
3534 | continue; | |
3535 | if (fd_info[i].cp == cp) | |
3536 | break; | |
3537 | } | |
3538 | if (i == MAXDESC) | |
3539 | { | |
f249a012 | 3540 | #ifdef HAVE_SOCKETS |
480b0c5b GV |
3541 | if (fd_info[fd].flags & FILE_SOCKET) |
3542 | { | |
f249a012 RS |
3543 | #ifndef SOCK_REPLACE_HANDLE |
3544 | if (winsock_lib == NULL) abort (); | |
480b0c5b GV |
3545 | |
3546 | pfn_shutdown (SOCK_HANDLE (fd), 2); | |
3547 | rc = pfn_closesocket (SOCK_HANDLE (fd)); | |
f249a012 RS |
3548 | #endif |
3549 | winsock_inuse--; /* count open sockets */ | |
480b0c5b GV |
3550 | } |
3551 | #endif | |
3552 | delete_child (cp); | |
3553 | } | |
3554 | } | |
3555 | } | |
3556 | ||
3557 | /* Note that sockets do not need special treatment here (at least on | |
e9e23e23 | 3558 | NT and Windows 95 using the standard tcp/ip stacks) - it appears that |
480b0c5b GV |
3559 | closesocket is equivalent to CloseHandle, which is to be expected |
3560 | because socket handles are fully fledged kernel handles. */ | |
3561 | rc = _close (fd); | |
3562 | ||
7559f399 | 3563 | if (rc == 0 && fd < MAXDESC) |
480b0c5b GV |
3564 | fd_info[fd].flags = 0; |
3565 | ||
3566 | return rc; | |
3567 | } | |
3568 | ||
3569 | int | |
3570 | sys_dup (int fd) | |
3571 | { | |
3572 | int new_fd; | |
3573 | ||
3574 | new_fd = _dup (fd); | |
7559f399 | 3575 | if (new_fd >= 0 && new_fd < MAXDESC) |
480b0c5b GV |
3576 | { |
3577 | /* duplicate our internal info as well */ | |
3578 | fd_info[new_fd] = fd_info[fd]; | |
3579 | } | |
3580 | return new_fd; | |
3581 | } | |
3582 | ||
3583 | ||
3584 | int | |
3585 | sys_dup2 (int src, int dst) | |
3586 | { | |
3587 | int rc; | |
3588 | ||
3589 | if (dst < 0 || dst >= MAXDESC) | |
3590 | { | |
3591 | errno = EBADF; | |
3592 | return -1; | |
3593 | } | |
3594 | ||
3595 | /* make sure we close the destination first if it's a pipe or socket */ | |
3596 | if (src != dst && fd_info[dst].flags != 0) | |
3597 | sys_close (dst); | |
177c0ea7 | 3598 | |
480b0c5b GV |
3599 | rc = _dup2 (src, dst); |
3600 | if (rc == 0) | |
3601 | { | |
3602 | /* duplicate our internal info as well */ | |
3603 | fd_info[dst] = fd_info[src]; | |
3604 | } | |
3605 | return rc; | |
3606 | } | |
3607 | ||
480b0c5b GV |
3608 | /* Unix pipe() has only one arg */ |
3609 | int | |
3610 | sys_pipe (int * phandles) | |
3611 | { | |
3612 | int rc; | |
3613 | unsigned flags; | |
480b0c5b | 3614 | |
76b3903d GV |
3615 | /* make pipe handles non-inheritable; when we spawn a child, we |
3616 | replace the relevant handle with an inheritable one. Also put | |
3617 | pipes into binary mode; we will do text mode translation ourselves | |
3618 | if required. */ | |
3619 | rc = _pipe (phandles, 0, _O_NOINHERIT | _O_BINARY); | |
480b0c5b GV |
3620 | |
3621 | if (rc == 0) | |
3622 | { | |
cb72110d JR |
3623 | /* Protect against overflow, since Windows can open more handles than |
3624 | our fd_info array has room for. */ | |
3625 | if (phandles[0] >= MAXDESC || phandles[1] >= MAXDESC) | |
3626 | { | |
3627 | _close (phandles[0]); | |
3628 | _close (phandles[1]); | |
3629 | rc = -1; | |
3630 | } | |
3631 | else | |
3632 | { | |
3633 | flags = FILE_PIPE | FILE_READ | FILE_BINARY; | |
3634 | fd_info[phandles[0]].flags = flags; | |
480b0c5b | 3635 | |
cb72110d JR |
3636 | flags = FILE_PIPE | FILE_WRITE | FILE_BINARY; |
3637 | fd_info[phandles[1]].flags = flags; | |
3638 | } | |
480b0c5b GV |
3639 | } |
3640 | ||
3641 | return rc; | |
3642 | } | |
3643 | ||
f7554349 | 3644 | /* From ntproc.c */ |
78806724 | 3645 | extern int w32_pipe_read_delay; |
f7554349 | 3646 | |
480b0c5b GV |
3647 | /* Function to do blocking read of one byte, needed to implement |
3648 | select. It is only allowed on sockets and pipes. */ | |
3649 | int | |
3650 | _sys_read_ahead (int fd) | |
3651 | { | |
3652 | child_process * cp; | |
3653 | int rc; | |
3654 | ||
3655 | if (fd < 0 || fd >= MAXDESC) | |
3656 | return STATUS_READ_ERROR; | |
3657 | ||
3658 | cp = fd_info[fd].cp; | |
3659 | ||
3660 | if (cp == NULL || cp->fd != fd || cp->status != STATUS_READ_READY) | |
3661 | return STATUS_READ_ERROR; | |
3662 | ||
3663 | if ((fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) == 0 | |
3664 | || (fd_info[fd].flags & FILE_READ) == 0) | |
3665 | { | |
3666 | DebPrint (("_sys_read_ahead: internal error: fd %d is not a pipe or socket!\n", fd)); | |
3667 | abort (); | |
3668 | } | |
177c0ea7 | 3669 | |
480b0c5b | 3670 | cp->status = STATUS_READ_IN_PROGRESS; |
177c0ea7 | 3671 | |
480b0c5b | 3672 | if (fd_info[fd].flags & FILE_PIPE) |
f7554349 | 3673 | { |
f7554349 KH |
3674 | rc = _read (fd, &cp->chr, sizeof (char)); |
3675 | ||
3676 | /* Give subprocess time to buffer some more output for us before | |
e9e23e23 | 3677 | reporting that input is available; we need this because Windows 95 |
f7554349 KH |
3678 | connects DOS programs to pipes by making the pipe appear to be |
3679 | the normal console stdout - as a result most DOS programs will | |
3680 | write to stdout without buffering, ie. one character at a | |
fbd6baed | 3681 | time. Even some W32 programs do this - "dir" in a command |
f7554349 KH |
3682 | shell on NT is very slow if we don't do this. */ |
3683 | if (rc > 0) | |
3684 | { | |
78806724 | 3685 | int wait = w32_pipe_read_delay; |
f7554349 KH |
3686 | |
3687 | if (wait > 0) | |
3688 | Sleep (wait); | |
3689 | else if (wait < 0) | |
3690 | while (++wait <= 0) | |
3691 | /* Yield remainder of our time slice, effectively giving a | |
3692 | temporary priority boost to the child process. */ | |
3693 | Sleep (0); | |
3694 | } | |
3695 | } | |
480b0c5b GV |
3696 | #ifdef HAVE_SOCKETS |
3697 | else if (fd_info[fd].flags & FILE_SOCKET) | |
ecd270eb JR |
3698 | { |
3699 | unsigned long nblock = 0; | |
3700 | /* We always want this to block, so temporarily disable NDELAY. */ | |
3701 | if (fd_info[fd].flags & FILE_NDELAY) | |
3702 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
3703 | ||
3704 | rc = pfn_recv (SOCK_HANDLE (fd), &cp->chr, sizeof (char), 0); | |
3705 | ||
3706 | if (fd_info[fd].flags & FILE_NDELAY) | |
3707 | { | |
3708 | nblock = 1; | |
3709 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
3710 | } | |
3711 | } | |
480b0c5b | 3712 | #endif |
177c0ea7 | 3713 | |
480b0c5b GV |
3714 | if (rc == sizeof (char)) |
3715 | cp->status = STATUS_READ_SUCCEEDED; | |
3716 | else | |
3717 | cp->status = STATUS_READ_FAILED; | |
3718 | ||
3719 | return cp->status; | |
3720 | } | |
3721 | ||
9bfb11f9 KS |
3722 | int |
3723 | _sys_wait_accept (int fd) | |
64570b36 KS |
3724 | { |
3725 | HANDLE hEv; | |
3726 | child_process * cp; | |
3727 | int rc; | |
3728 | ||
3729 | if (fd < 0 || fd >= MAXDESC) | |
3730 | return STATUS_READ_ERROR; | |
3731 | ||
3732 | cp = fd_info[fd].cp; | |
3733 | ||
3734 | if (cp == NULL || cp->fd != fd || cp->status != STATUS_READ_READY) | |
3735 | return STATUS_READ_ERROR; | |
3736 | ||
3737 | cp->status = STATUS_READ_FAILED; | |
3738 | ||
3739 | hEv = pfn_WSACreateEvent (); | |
3740 | rc = pfn_WSAEventSelect (SOCK_HANDLE (fd), hEv, FD_ACCEPT); | |
3741 | if (rc != SOCKET_ERROR) | |
3742 | { | |
3743 | rc = WaitForSingleObject (hEv, INFINITE); | |
3744 | pfn_WSAEventSelect (SOCK_HANDLE (fd), NULL, 0); | |
64570b36 KS |
3745 | if (rc == WAIT_OBJECT_0) |
3746 | cp->status = STATUS_READ_SUCCEEDED; | |
3747 | } | |
7046f191 | 3748 | pfn_WSACloseEvent (hEv); |
64570b36 KS |
3749 | |
3750 | return cp->status; | |
3751 | } | |
3752 | ||
480b0c5b GV |
3753 | int |
3754 | sys_read (int fd, char * buffer, unsigned int count) | |
3755 | { | |
3756 | int nchars; | |
480b0c5b GV |
3757 | int to_read; |
3758 | DWORD waiting; | |
76b3903d | 3759 | char * orig_buffer = buffer; |
480b0c5b | 3760 | |
7559f399 | 3761 | if (fd < 0) |
480b0c5b GV |
3762 | { |
3763 | errno = EBADF; | |
3764 | return -1; | |
3765 | } | |
3766 | ||
7559f399 | 3767 | if (fd < MAXDESC && fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) |
480b0c5b GV |
3768 | { |
3769 | child_process *cp = fd_info[fd].cp; | |
3770 | ||
3771 | if ((fd_info[fd].flags & FILE_READ) == 0) | |
3772 | { | |
3773 | errno = EBADF; | |
3774 | return -1; | |
3775 | } | |
3776 | ||
76b3903d GV |
3777 | nchars = 0; |
3778 | ||
3779 | /* re-read CR carried over from last read */ | |
3780 | if (fd_info[fd].flags & FILE_LAST_CR) | |
3781 | { | |
3782 | if (fd_info[fd].flags & FILE_BINARY) abort (); | |
3783 | *buffer++ = 0x0d; | |
3784 | count--; | |
3785 | nchars++; | |
f52eb3ef | 3786 | fd_info[fd].flags &= ~FILE_LAST_CR; |
76b3903d GV |
3787 | } |
3788 | ||
480b0c5b GV |
3789 | /* presence of a child_process structure means we are operating in |
3790 | non-blocking mode - otherwise we just call _read directly. | |
3791 | Note that the child_process structure might be missing because | |
3792 | reap_subprocess has been called; in this case the pipe is | |
3793 | already broken, so calling _read on it is okay. */ | |
3794 | if (cp) | |
3795 | { | |
3796 | int current_status = cp->status; | |
3797 | ||
3798 | switch (current_status) | |
3799 | { | |
3800 | case STATUS_READ_FAILED: | |
3801 | case STATUS_READ_ERROR: | |
f52eb3ef GV |
3802 | /* report normal EOF if nothing in buffer */ |
3803 | if (nchars <= 0) | |
3804 | fd_info[fd].flags |= FILE_AT_EOF; | |
3805 | return nchars; | |
480b0c5b GV |
3806 | |
3807 | case STATUS_READ_READY: | |
3808 | case STATUS_READ_IN_PROGRESS: | |
3809 | DebPrint (("sys_read called when read is in progress\n")); | |
3810 | errno = EWOULDBLOCK; | |
3811 | return -1; | |
3812 | ||
3813 | case STATUS_READ_SUCCEEDED: | |
3814 | /* consume read-ahead char */ | |
3815 | *buffer++ = cp->chr; | |
3816 | count--; | |
76b3903d | 3817 | nchars++; |
480b0c5b GV |
3818 | cp->status = STATUS_READ_ACKNOWLEDGED; |
3819 | ResetEvent (cp->char_avail); | |
3820 | ||
3821 | case STATUS_READ_ACKNOWLEDGED: | |
3822 | break; | |
3823 | ||
3824 | default: | |
3825 | DebPrint (("sys_read: bad status %d\n", current_status)); | |
3826 | errno = EBADF; | |
3827 | return -1; | |
3828 | } | |
3829 | ||
3830 | if (fd_info[fd].flags & FILE_PIPE) | |
3831 | { | |
3832 | PeekNamedPipe ((HANDLE) _get_osfhandle (fd), NULL, 0, NULL, &waiting, NULL); | |
3833 | to_read = min (waiting, (DWORD) count); | |
f52eb3ef GV |
3834 | |
3835 | if (to_read > 0) | |
3836 | nchars += _read (fd, buffer, to_read); | |
480b0c5b GV |
3837 | } |
3838 | #ifdef HAVE_SOCKETS | |
3839 | else /* FILE_SOCKET */ | |
3840 | { | |
f249a012 | 3841 | if (winsock_lib == NULL) abort (); |
480b0c5b GV |
3842 | |
3843 | /* do the equivalent of a non-blocking read */ | |
3844 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONREAD, &waiting); | |
76b3903d | 3845 | if (waiting == 0 && nchars == 0) |
480b0c5b GV |
3846 | { |
3847 | h_errno = errno = EWOULDBLOCK; | |
3848 | return -1; | |
3849 | } | |
3850 | ||
480b0c5b GV |
3851 | if (waiting) |
3852 | { | |
3853 | /* always use binary mode for sockets */ | |
76b3903d GV |
3854 | int res = pfn_recv (SOCK_HANDLE (fd), buffer, count, 0); |
3855 | if (res == SOCKET_ERROR) | |
480b0c5b GV |
3856 | { |
3857 | DebPrint(("sys_read.recv failed with error %d on socket %ld\n", | |
3858 | pfn_WSAGetLastError (), SOCK_HANDLE (fd))); | |
76b3903d GV |
3859 | set_errno (); |
3860 | return -1; | |
480b0c5b | 3861 | } |
76b3903d | 3862 | nchars += res; |
480b0c5b GV |
3863 | } |
3864 | } | |
3865 | #endif | |
3866 | } | |
3867 | else | |
f52eb3ef GV |
3868 | { |
3869 | int nread = _read (fd, buffer, count); | |
3870 | if (nread >= 0) | |
3871 | nchars += nread; | |
3872 | else if (nchars == 0) | |
3873 | nchars = nread; | |
3874 | } | |
76b3903d | 3875 | |
f52eb3ef GV |
3876 | if (nchars <= 0) |
3877 | fd_info[fd].flags |= FILE_AT_EOF; | |
76b3903d | 3878 | /* Perform text mode translation if required. */ |
f52eb3ef | 3879 | else if ((fd_info[fd].flags & FILE_BINARY) == 0) |
76b3903d GV |
3880 | { |
3881 | nchars = crlf_to_lf (nchars, orig_buffer); | |
3882 | /* If buffer contains only CR, return that. To be absolutely | |
3883 | sure we should attempt to read the next char, but in | |
3884 | practice a CR to be followed by LF would not appear by | |
3885 | itself in the buffer. */ | |
3886 | if (nchars > 1 && orig_buffer[nchars - 1] == 0x0d) | |
3887 | { | |
3888 | fd_info[fd].flags |= FILE_LAST_CR; | |
3889 | nchars--; | |
3890 | } | |
76b3903d | 3891 | } |
480b0c5b GV |
3892 | } |
3893 | else | |
3894 | nchars = _read (fd, buffer, count); | |
3895 | ||
76b3903d | 3896 | return nchars; |
480b0c5b GV |
3897 | } |
3898 | ||
3899 | /* For now, don't bother with a non-blocking mode */ | |
3900 | int | |
3901 | sys_write (int fd, const void * buffer, unsigned int count) | |
3902 | { | |
3903 | int nchars; | |
3904 | ||
7559f399 | 3905 | if (fd < 0) |
480b0c5b GV |
3906 | { |
3907 | errno = EBADF; | |
3908 | return -1; | |
3909 | } | |
3910 | ||
7559f399 | 3911 | if (fd < MAXDESC && fd_info[fd].flags & (FILE_PIPE | FILE_SOCKET)) |
76b3903d GV |
3912 | { |
3913 | if ((fd_info[fd].flags & FILE_WRITE) == 0) | |
3914 | { | |
3915 | errno = EBADF; | |
3916 | return -1; | |
3917 | } | |
3918 | ||
3919 | /* Perform text mode translation if required. */ | |
3920 | if ((fd_info[fd].flags & FILE_BINARY) == 0) | |
3921 | { | |
3922 | char * tmpbuf = alloca (count * 2); | |
3923 | unsigned char * src = (void *)buffer; | |
3924 | unsigned char * dst = tmpbuf; | |
3925 | int nbytes = count; | |
3926 | ||
3927 | while (1) | |
3928 | { | |
3929 | unsigned char *next; | |
3930 | /* copy next line or remaining bytes */ | |
3931 | next = _memccpy (dst, src, '\n', nbytes); | |
3932 | if (next) | |
3933 | { | |
3934 | /* copied one line ending with '\n' */ | |
3935 | int copied = next - dst; | |
3936 | nbytes -= copied; | |
3937 | src += copied; | |
3938 | /* insert '\r' before '\n' */ | |
3939 | next[-1] = '\r'; | |
3940 | next[0] = '\n'; | |
3941 | dst = next + 1; | |
3942 | count++; | |
177c0ea7 | 3943 | } |
76b3903d GV |
3944 | else |
3945 | /* copied remaining partial line -> now finished */ | |
3946 | break; | |
3947 | } | |
3948 | buffer = tmpbuf; | |
3949 | } | |
3950 | } | |
3951 | ||
480b0c5b | 3952 | #ifdef HAVE_SOCKETS |
7559f399 | 3953 | if (fd < MAXDESC && fd_info[fd].flags & FILE_SOCKET) |
480b0c5b | 3954 | { |
30a32e0e | 3955 | unsigned long nblock = 0; |
f249a012 | 3956 | if (winsock_lib == NULL) abort (); |
30a32e0e JR |
3957 | |
3958 | /* TODO: implement select() properly so non-blocking I/O works. */ | |
3959 | /* For now, make sure the write blocks. */ | |
3960 | if (fd_info[fd].flags & FILE_NDELAY) | |
3961 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
3962 | ||
480b0c5b | 3963 | nchars = pfn_send (SOCK_HANDLE (fd), buffer, count, 0); |
30a32e0e JR |
3964 | |
3965 | /* Set the socket back to non-blocking if it was before, | |
3966 | for other operations that support it. */ | |
3967 | if (fd_info[fd].flags & FILE_NDELAY) | |
3968 | { | |
3969 | nblock = 1; | |
3970 | pfn_ioctlsocket (SOCK_HANDLE (fd), FIONBIO, &nblock); | |
3971 | } | |
3972 | ||
480b0c5b GV |
3973 | if (nchars == SOCKET_ERROR) |
3974 | { | |
670773af | 3975 | DebPrint(("sys_write.send failed with error %d on socket %ld\n", |
480b0c5b GV |
3976 | pfn_WSAGetLastError (), SOCK_HANDLE (fd))); |
3977 | set_errno (); | |
3978 | } | |
3979 | } | |
3980 | else | |
3981 | #endif | |
3982 | nchars = _write (fd, buffer, count); | |
3983 | ||
3984 | return nchars; | |
3985 | } | |
3986 | ||
f52eb3ef GV |
3987 | static void |
3988 | check_windows_init_file () | |
3989 | { | |
3990 | extern int noninteractive, inhibit_window_system; | |
3991 | ||
3992 | /* A common indication that Emacs is not installed properly is when | |
3993 | it cannot find the Windows installation file. If this file does | |
3994 | not exist in the expected place, tell the user. */ | |
3995 | ||
177c0ea7 | 3996 | if (!noninteractive && !inhibit_window_system) |
d54abccd GV |
3997 | { |
3998 | extern Lisp_Object Vwindow_system, Vload_path, Qfile_exists_p; | |
a0b9c838 | 3999 | Lisp_Object objs[2]; |
96ef7d42 | 4000 | Lisp_Object full_load_path; |
d54abccd GV |
4001 | Lisp_Object init_file; |
4002 | int fd; | |
f52eb3ef | 4003 | |
a0b9c838 GV |
4004 | objs[0] = Vload_path; |
4005 | objs[1] = decode_env_path (0, (getenv ("EMACSLOADPATH"))); | |
4006 | full_load_path = Fappend (2, objs); | |
d54abccd | 4007 | init_file = build_string ("term/w32-win"); |
c50a2aa6 | 4008 | fd = openp (full_load_path, init_file, Fget_load_suffixes (), NULL, Qnil); |
177c0ea7 | 4009 | if (fd < 0) |
d54abccd | 4010 | { |
96ef7d42 | 4011 | Lisp_Object load_path_print = Fprin1_to_string (full_load_path, Qnil); |
d5db4077 KR |
4012 | char *init_file_name = SDATA (init_file); |
4013 | char *load_path = SDATA (load_path_print); | |
acc23b87 KS |
4014 | char *buffer = alloca (1024 |
4015 | + strlen (init_file_name) | |
4016 | + strlen (load_path)); | |
d54abccd | 4017 | |
177c0ea7 | 4018 | sprintf (buffer, |
d54abccd GV |
4019 | "The Emacs Windows initialization file \"%s.el\" " |
4020 | "could not be found in your Emacs installation. " | |
4021 | "Emacs checked the following directories for this file:\n" | |
4022 | "\n%s\n\n" | |
4023 | "When Emacs cannot find this file, it usually means that it " | |
4024 | "was not installed properly, or its distribution file was " | |
4025 | "not unpacked properly.\nSee the README.W32 file in the " | |
4026 | "top-level Emacs directory for more information.", | |
4027 | init_file_name, load_path); | |
4028 | MessageBox (NULL, | |
4029 | buffer, | |
4030 | "Emacs Abort Dialog", | |
4031 | MB_OK | MB_ICONEXCLAMATION | MB_TASKMODAL); | |
f52eb3ef GV |
4032 | /* Use the low-level Emacs abort. */ |
4033 | #undef abort | |
d54abccd GV |
4034 | abort (); |
4035 | } | |
4036 | else | |
4037 | { | |
a302c7ae | 4038 | _close (fd); |
d54abccd | 4039 | } |
f52eb3ef | 4040 | } |
f52eb3ef | 4041 | } |
480b0c5b GV |
4042 | |
4043 | void | |
4044 | term_ntproc () | |
4045 | { | |
4046 | #ifdef HAVE_SOCKETS | |
4047 | /* shutdown the socket interface if necessary */ | |
4048 | term_winsock (); | |
4049 | #endif | |
52c7f9ee JR |
4050 | |
4051 | term_w32select (); | |
480b0c5b GV |
4052 | } |
4053 | ||
4054 | void | |
4055 | init_ntproc () | |
4056 | { | |
4057 | #ifdef HAVE_SOCKETS | |
f249a012 RS |
4058 | /* Initialise the socket interface now if available and requested by |
4059 | the user by defining PRELOAD_WINSOCK; otherwise loading will be | |
fbd6baed | 4060 | delayed until open-network-stream is called (w32-has-winsock can |
f249a012 RS |
4061 | also be used to dynamically load or reload winsock). |
4062 | ||
4063 | Conveniently, init_environment is called before us, so | |
4064 | PRELOAD_WINSOCK can be set in the registry. */ | |
4065 | ||
4066 | /* Always initialize this correctly. */ | |
4067 | winsock_lib = NULL; | |
4068 | ||
4069 | if (getenv ("PRELOAD_WINSOCK") != NULL) | |
4070 | init_winsock (TRUE); | |
480b0c5b GV |
4071 | #endif |
4072 | ||
4073 | /* Initial preparation for subprocess support: replace our standard | |
4074 | handles with non-inheritable versions. */ | |
4075 | { | |
4076 | HANDLE parent; | |
4077 | HANDLE stdin_save = INVALID_HANDLE_VALUE; | |
4078 | HANDLE stdout_save = INVALID_HANDLE_VALUE; | |
4079 | HANDLE stderr_save = INVALID_HANDLE_VALUE; | |
4080 | ||
4081 | parent = GetCurrentProcess (); | |
4082 | ||
4083 | /* ignore errors when duplicating and closing; typically the | |
4084 | handles will be invalid when running as a gui program. */ | |
177c0ea7 JB |
4085 | DuplicateHandle (parent, |
4086 | GetStdHandle (STD_INPUT_HANDLE), | |
480b0c5b | 4087 | parent, |
177c0ea7 JB |
4088 | &stdin_save, |
4089 | 0, | |
4090 | FALSE, | |
480b0c5b | 4091 | DUPLICATE_SAME_ACCESS); |
177c0ea7 | 4092 | |
480b0c5b GV |
4093 | DuplicateHandle (parent, |
4094 | GetStdHandle (STD_OUTPUT_HANDLE), | |
4095 | parent, | |
4096 | &stdout_save, | |
4097 | 0, | |
4098 | FALSE, | |
4099 | DUPLICATE_SAME_ACCESS); | |
177c0ea7 | 4100 | |
480b0c5b GV |
4101 | DuplicateHandle (parent, |
4102 | GetStdHandle (STD_ERROR_HANDLE), | |
4103 | parent, | |
4104 | &stderr_save, | |
4105 | 0, | |
4106 | FALSE, | |
4107 | DUPLICATE_SAME_ACCESS); | |
177c0ea7 | 4108 | |
480b0c5b GV |
4109 | fclose (stdin); |
4110 | fclose (stdout); | |
4111 | fclose (stderr); | |
4112 | ||
4113 | if (stdin_save != INVALID_HANDLE_VALUE) | |
4114 | _open_osfhandle ((long) stdin_save, O_TEXT); | |
4115 | else | |
76b3903d GV |
4116 | _open ("nul", O_TEXT | O_NOINHERIT | O_RDONLY); |
4117 | _fdopen (0, "r"); | |
480b0c5b GV |
4118 | |
4119 | if (stdout_save != INVALID_HANDLE_VALUE) | |
4120 | _open_osfhandle ((long) stdout_save, O_TEXT); | |
4121 | else | |
76b3903d GV |
4122 | _open ("nul", O_TEXT | O_NOINHERIT | O_WRONLY); |
4123 | _fdopen (1, "w"); | |
480b0c5b GV |
4124 | |
4125 | if (stderr_save != INVALID_HANDLE_VALUE) | |
4126 | _open_osfhandle ((long) stderr_save, O_TEXT); | |
4127 | else | |
76b3903d GV |
4128 | _open ("nul", O_TEXT | O_NOINHERIT | O_WRONLY); |
4129 | _fdopen (2, "w"); | |
480b0c5b GV |
4130 | } |
4131 | ||
4132 | /* unfortunately, atexit depends on implementation of malloc */ | |
4133 | /* atexit (term_ntproc); */ | |
4134 | signal (SIGABRT, term_ntproc); | |
76b3903d GV |
4135 | |
4136 | /* determine which drives are fixed, for GetCachedVolumeInformation */ | |
4137 | { | |
4138 | /* GetDriveType must have trailing backslash. */ | |
4139 | char drive[] = "A:\\"; | |
4140 | ||
4141 | /* Loop over all possible drive letters */ | |
4142 | while (*drive <= 'Z') | |
4143 | { | |
4144 | /* Record if this drive letter refers to a fixed drive. */ | |
177c0ea7 | 4145 | fixed_drives[DRIVE_INDEX (*drive)] = |
76b3903d GV |
4146 | (GetDriveType (drive) == DRIVE_FIXED); |
4147 | ||
4148 | (*drive)++; | |
4149 | } | |
a302c7ae AI |
4150 | |
4151 | /* Reset the volume info cache. */ | |
4152 | volume_cache = NULL; | |
76b3903d | 4153 | } |
177c0ea7 | 4154 | |
d54abccd GV |
4155 | /* Check to see if Emacs has been installed correctly. */ |
4156 | check_windows_init_file (); | |
480b0c5b GV |
4157 | } |
4158 | ||
a8c3a596 JR |
4159 | /* |
4160 | shutdown_handler ensures that buffers' autosave files are | |
4161 | up to date when the user logs off, or the system shuts down. | |
4162 | */ | |
4163 | BOOL WINAPI shutdown_handler(DWORD type) | |
4164 | { | |
4165 | /* Ctrl-C and Ctrl-Break are already suppressed, so don't handle them. */ | |
4166 | if (type == CTRL_CLOSE_EVENT /* User closes console window. */ | |
4167 | || type == CTRL_LOGOFF_EVENT /* User logs off. */ | |
4168 | || type == CTRL_SHUTDOWN_EVENT) /* User shutsdown. */ | |
4169 | { | |
4170 | /* Shut down cleanly, making sure autosave files are up to date. */ | |
4171 | shut_down_emacs (0, 0, Qnil); | |
4172 | } | |
4173 | ||
7046f191 | 4174 | /* Allow other handlers to handle this signal. */ |
a8c3a596 JR |
4175 | return FALSE; |
4176 | } | |
4177 | ||
9785d95b BK |
4178 | /* |
4179 | globals_of_w32 is used to initialize those global variables that | |
4180 | must always be initialized on startup even when the global variable | |
4181 | initialized is non zero (see the function main in emacs.c). | |
4182 | */ | |
9bfb11f9 KS |
4183 | void |
4184 | globals_of_w32 () | |
9785d95b | 4185 | { |
74258518 JR |
4186 | HMODULE kernel32 = GetModuleHandle ("kernel32.dll"); |
4187 | ||
4188 | get_process_times_fn = (GetProcessTimes_Proc) | |
4189 | GetProcAddress (kernel32, "GetProcessTimes"); | |
4190 | ||
9785d95b BK |
4191 | g_b_init_is_windows_9x = 0; |
4192 | g_b_init_open_process_token = 0; | |
4193 | g_b_init_get_token_information = 0; | |
4194 | g_b_init_lookup_account_sid = 0; | |
4195 | g_b_init_get_sid_identifier_authority = 0; | |
a8c3a596 JR |
4196 | /* The following sets a handler for shutdown notifications for |
4197 | console apps. This actually applies to Emacs in both console and | |
4198 | GUI modes, since we had to fool windows into thinking emacs is a | |
4199 | console application to get console mode to work. */ | |
4200 | SetConsoleCtrlHandler(shutdown_handler, TRUE); | |
9785d95b BK |
4201 | } |
4202 | ||
aa5ee2a3 | 4203 | /* end of w32.c */ |
ab5796a9 MB |
4204 | |
4205 | /* arch-tag: 90442dd3-37be-482b-b272-ac752e3049f1 | |
4206 | (do not change this comment) */ |